Makefile: Split build into bin and obj directories

This also moves the main binary from ./bfs to ./bin/bfs, and ./tests.sh
to ./tests/tests.sh, with the goal of keeping the repository root clean.

1 files changed, 0 insertions, 3435 deletions

diff --git a/tests.sh b/tests.sh
deleted file mode 100755
index 52507a0..0000000
--- a/tests.sh
+++ /dev/null
@@ -1,3435 +0,0 @@
-#!/usr/bin/env bash
-
-############################################################################
-# bfs                                                                      #
-# Copyright (C) 2015-2022 Tavian Barnes <tavianator@tavianator.com>        #
-#                                                                          #
-# Permission to use, copy, modify, and/or distribute this software for any #
-# purpose with or without fee is hereby granted.                           #
-#                                                                          #
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES #
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         #
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  #
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   #
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    #
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  #
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           #
-############################################################################
-
-set -eP
-umask 022
-
-export LC_ALL=C
-export TZ=UTC0
-
-export ASAN_OPTIONS="abort_on_error=1"
-export LSAN_OPTIONS="abort_on_error=1"
-export MSAN_OPTIONS="abort_on_error=1"
-export TSAN_OPTIONS="abort_on_error=1"
-export UBSAN_OPTIONS="abort_on_error=1"
-
-export LS_COLORS=""
-unset BFS_COLORS
-
-if [ -t 1 ]; then
-    BLD=$(printf '\033[01m')
-    RED=$(printf '\033[01;31m')
-    GRN=$(printf '\033[01;32m')
-    YLW=$(printf '\033[01;33m')
-    BLU=$(printf '\033[01;34m')
-    MAG=$(printf '\033[01;35m')
-    CYN=$(printf '\033[01;36m')
-    RST=$(printf '\033[0m')
-fi
-
-UNAME=$(uname)
-
-if command -v capsh &>/dev/null; then
-    if capsh --has-p=cap_dac_override &>/dev/null || capsh --has-p=cap_dac_read_search &>/dev/null; then
-	if [ -n "$BFS_TRIED_DROP" ]; then
-            cat >&2 <<EOF
-${RED}error:${RST} Failed to drop capabilities.
-EOF
-
-	    exit 1
-	fi
-
-        cat >&2 <<EOF
-${YLW}warning:${RST} Running as ${BLD}$(id -un)${RST} is not recommended.  Dropping ${BLD}cap_dac_override${RST} and
-${BLD}cap_dac_read_search${RST}.
-
-EOF
-
-        BFS_TRIED_DROP=y exec capsh \
-            --drop=cap_dac_override,cap_dac_read_search \
-            --caps=cap_dac_override,cap_dac_read_search-eip \
-            -- "$0" "$@"
-    fi
-elif [ "$EUID" -eq 0 ]; then
-    UNLESS=
-    if [ "$UNAME" = "Linux" ]; then
-	UNLESS=" unless ${GRN}capsh${RST} is installed"
-    fi
-
-    cat >&2 <<EOF
-${RED}error:${RST} These tests expect filesystem permissions to be enforced, and therefore
-will not work when run as ${BLD}$(id -un)${RST}${UNLESS}.
-EOF
-    exit 1
-fi
-
-function usage() {
-    local pad=$(printf "%*s" ${#0} "")
-    cat <<EOF
-Usage: ${GRN}$0${RST} [${BLU}--bfs${RST}=${MAG}path/to/bfs${RST}] [${BLU}--posix${RST}] [${BLU}--bsd${RST}] [${BLU}--gnu${RST}] [${BLU}--all${RST}] [${BLU}--sudo${RST}]
-       $pad [${BLU}--stop${RST}] [${BLU}--noclean${RST}] [${BLU}--update${RST}] [${BLU}--verbose${RST}[=${BLD}LEVEL${RST}]] [${BLU}--help${RST}]
-       $pad [${BLD}test_*${RST} [${BLD}test_*${RST} ...]]
-
-  ${BLU}--bfs${RST}=${MAG}path/to/bfs${RST}
-      Set the path to the bfs executable to test (default: ${MAG}./bfs${RST})
-
-  ${BLU}--posix${RST}, ${BLU}--bsd${RST}, ${BLU}--gnu${RST}, ${BLU}--all${RST}
-      Choose which test cases to run (default: ${BLU}--all${RST})
-
-  ${BLU}--sudo${RST}
-      Run tests that require root
-
-  ${BLU}--stop${RST}
-      Stop when the first error occurs
-
-  ${BLU}--noclean${RST}
-      Keep the test directories around after the run
-
-  ${BLU}--update${RST}
-      Update the expected outputs for the test cases
-
-  ${BLU}--verbose${RST}=${BLD}commands${RST}
-      Log the commands that get executed
-  ${BLU}--verbose${RST}=${BLD}errors${RST}
-      Don't redirect standard error
-  ${BLU}--verbose${RST}=${BLD}skipped${RST}
-      Log which tests get skipped
-  ${BLU}--verbose${RST}=${BLD}tests${RST}
-      Log all tests that get run
-  ${BLU}--verbose${RST}
-      Log everything
-
-  ${BLU}--help${RST}
-      This message
-
-  ${BLD}test_*${RST}
-      Select individual test cases to run
-EOF
-}
-
-DEFAULT=yes
-POSIX=
-BSD=
-GNU=
-ALL=
-SUDO=
-STOP=
-CLEAN=yes
-UPDATE=
-VERBOSE_COMMANDS=
-VERBOSE_ERRORS=
-VERBOSE_SKIPPED=
-VERBOSE_TESTS=
-EXPLICIT=
-
-enabled_tests=()
-
-for arg; do
-    case "$arg" in
-        --bfs=*)
-            BFS="${arg#*=}"
-            ;;
-        --posix)
-            DEFAULT=
-            POSIX=yes
-            ;;
-        --bsd)
-            DEFAULT=
-            POSIX=yes
-            BSD=yes
-            ;;
-        --gnu)
-            DEFAULT=
-            POSIX=yes
-            GNU=yes
-            ;;
-        --all)
-            DEFAULT=
-            POSIX=yes
-            BSD=yes
-            GNU=yes
-            ALL=yes
-            ;;
-        --sudo)
-            SUDO=yes
-            ;;
-        --stop)
-            STOP=yes
-            ;;
-        --noclean)
-            CLEAN=
-            ;;
-        --update)
-            UPDATE=yes
-            ;;
-        --verbose=commands)
-            VERBOSE_COMMANDS=yes
-            ;;
-        --verbose=errors)
-            VERBOSE_ERRORS=yes
-            ;;
-        --verbose=skipped)
-            VERBOSE_SKIPPED=yes
-            ;;
-        --verbose=tests)
-            VERBOSE_SKIPPED=yes
-            VERBOSE_TESTS=yes
-            ;;
-        --verbose)
-            VERBOSE_COMMANDS=yes
-            VERBOSE_ERRORS=yes
-            VERBOSE_SKIPPED=yes
-            VERBOSE_TESTS=yes
-            ;;
-        --help)
-            usage
-            exit 0
-            ;;
-        test_*)
-            EXPLICIT=yes
-            SUDO=yes
-            enabled_tests+=("$arg")
-            ;;
-        *)
-            printf "${RED}error:${RST} Unrecognized option '%s'.\n\n" "$arg" >&2
-            usage >&2
-            exit 1
-            ;;
-    esac
-done
-
-posix_tests=(
-    # General parsing
-    test_basic
-
-    test_parens
-    test_bang
-    test_implicit_and
-    test_a
-    test_o
-
-    test_weird_names
-
-    test_incomplete
-    test_missing_paren
-    test_extra_paren
-
-    # Flags
-
-    test_H
-    test_H_slash
-    test_H_broken
-    test_H_notdir
-    test_H_loops
-
-    test_L
-    test_L_broken
-    test_L_notdir
-    test_L_loops
-
-    test_flag_weird_names
-    test_flag_comma
-
-    # Primaries
-
-    test_depth
-    test_depth_slash
-    test_depth_error
-    test_L_depth
-
-    test_exec
-    test_exec_plus
-    test_exec_plus_status
-    test_exec_plus_semicolon
-
-    test_group_name
-    test_group_id
-    test_group_nogroup
-
-    test_links
-    test_links_plus
-    test_links_minus
-
-    test_name
-    test_name_root
-    test_name_root_depth
-    test_name_trailing_slash
-    test_name_star_star
-    test_name_character_class
-    test_name_bracket
-    test_name_backslash
-    test_name_double_backslash
-
-    test_newer
-    test_newer_link
-
-    test_nogroup
-    test_nogroup_ulimit
-
-    test_nouser
-    test_nouser_ulimit
-
-    test_ok_stdin
-    test_ok_plus_semicolon
-
-    test_path
-
-    test_perm_000
-    test_perm_000_minus
-    test_perm_222
-    test_perm_222_minus
-    test_perm_644
-    test_perm_644_minus
-    test_perm_symbolic
-    test_perm_symbolic_minus
-    test_perm_leading_plus_symbolic_minus
-    test_permcopy
-    test_perm_setid
-    test_perm_sticky
-
-    test_prune
-    test_prune_file
-    test_prune_or_print
-    test_not_prune
-
-    test_size
-    test_size_plus
-    test_size_bytes
-
-    test_type_d
-    test_type_f
-    test_type_l
-    test_H_type_l
-    test_L_type_l
-    test_type_bind_mount
-
-    test_user_name
-    test_user_id
-    test_user_nouser
-
-    test_xdev
-    test_L_xdev
-
-    # Closed file descriptors
-    test_closed_stdin
-    test_closed_stdout
-    test_closed_stderr
-
-    # PATH_MAX handling
-    test_deep
-
-    # Optimizer tests
-    test_or_purity
-    test_double_negation
-    test_de_morgan_not
-    test_de_morgan_and
-    test_de_morgan_or
-    test_data_flow_group
-    test_data_flow_user
-    test_data_flow_type
-    test_data_flow_and_swap
-    test_data_flow_or_swap
-)
-
-bsd_tests=(
-    # Flags
-
-    test_E
-
-    test_P
-    test_P_slash
-
-    test_X
-
-    test_d_path
-
-    test_f
-
-    test_s
-
-    test_double_dash
-    test_flag_double_dash
-
-    # Primaries
-
-    test_acl
-    test_L_acl
-
-    test_anewer
-    test_asince
-
-    test_delete
-    test_delete_many
-
-    test_depth_maxdepth_1
-    test_depth_maxdepth_2
-    test_depth_mindepth_1
-    test_depth_mindepth_2
-
-    test_depth_n
-    test_depth_n_plus
-    test_depth_n_minus
-    test_depth_depth_n
-    test_depth_depth_n_plus
-    test_depth_depth_n_minus
-    test_depth_overflow
-    test_data_flow_depth
-
-    test_exec_substring
-
-    test_execdir_pwd
-    test_execdir_slash
-    test_execdir_slash_pwd
-    test_execdir_slashes
-    test_execdir_ulimit
-
-    test_exit
-    test_exit_no_implicit_print
-
-    test_flags
-
-    test_follow
-
-    test_gid_name
-
-    test_ilname
-    test_L_ilname
-
-    test_iname
-
-    test_inum
-    test_inum_mount
-    test_inum_bind_mount
-
-    test_ipath
-
-    test_iregex
-
-    test_lname
-    test_L_lname
-
-    test_ls
-    test_L_ls
-
-    test_maxdepth
-
-    test_mindepth
-
-    test_mnewer
-    test_H_mnewer
-
-    test_mount
-    test_L_mount
-
-    test_msince
-
-    test_mtime_units
-
-    test_name_slash
-    test_name_slashes
-
-    test_H_newer
-
-    test_newerma
-    test_newermt
-    test_newermt_epoch_minus_one
-
-    test_ok_stdin
-    test_ok_closed_stdin
-
-    test_okdir_stdin
-    test_okdir_closed_stdin
-
-    test_perm_000_plus
-    test_perm_222_plus
-    test_perm_644_plus
-
-    test_printx
-
-    test_quit
-    test_quit_child
-    test_quit_depth
-    test_quit_depth_child
-    test_quit_after_print
-    test_quit_before_print
-    test_quit_implicit_print
-
-    test_rm
-
-    test_regex
-    test_regex_parens
-
-    test_samefile
-    test_samefile_symlink
-    test_H_samefile_symlink
-    test_L_samefile_symlink
-    test_samefile_broken
-    test_H_samefile_broken
-    test_L_samefile_broken
-    test_samefile_notdir
-    test_H_samefile_notdir
-    test_L_samefile_notdir
-
-    test_size_T
-    test_size_big
-
-    test_uid_name
-
-    test_xattr
-    test_L_xattr
-
-    test_xattrname
-    test_L_xattrname
-
-    # Optimizer tests
-    test_data_flow_sparse
-)
-
-gnu_tests=(
-    # General parsing
-
-    test_not
-    test_and
-    test_or
-    test_comma
-    test_precedence
-
-    test_follow_comma
-
-    # Flags
-
-    test_P
-    test_P_slash
-
-    test_L_loops_continue
-
-    test_double_dash
-    test_flag_double_dash
-
-    # Primaries
-
-    test_anewer
-
-    test_path_d
-
-    test_daystart
-    test_daystart_twice
-
-    test_delete
-    test_delete_many
-    test_L_delete
-
-    test_depth_mindepth_1
-    test_depth_mindepth_2
-    test_depth_maxdepth_1
-    test_depth_maxdepth_2
-
-    test_empty
-    test_empty_special
-
-    test_exec_nothing
-    test_exec_substring
-    test_exec_flush
-    test_exec_flush_fail
-    test_exec_plus_flush
-    test_exec_plus_flush_fail
-
-    test_execdir
-    test_execdir_substring
-    test_execdir_plus_semicolon
-    test_execdir_pwd
-    test_execdir_slash
-    test_execdir_slash_pwd
-    test_execdir_slashes
-    test_execdir_ulimit
-
-    test_executable
-
-    test_false
-
-    test_files0_from_file
-    test_files0_from_stdin
-    test_files0_from_none
-    test_files0_from_empty
-    test_files0_from_nowhere
-    test_files0_from_nothing
-    test_files0_from_ok
-
-    test_fls
-
-    test_follow
-
-    test_fprint
-    test_fprint_duplicate
-    test_fprint_error
-    test_fprint_noerror
-    test_fprint_noarg
-    test_fprint_nonexistent
-    test_fprint_truncate
-
-    test_fprint0
-
-    test_fprintf
-    test_fprintf_nofile
-    test_fprintf_noformat
-
-    test_fstype
-
-    test_gid
-    test_gid_plus
-    test_gid_plus_plus
-    test_gid_minus
-    test_gid_minus_plus
-
-    test_ignore_readdir_race
-    test_ignore_readdir_race_root
-    test_ignore_readdir_race_notdir
-
-    test_ilname
-    test_L_ilname
-
-    test_iname
-
-    test_inum
-    test_inum_mount
-    test_inum_bind_mount
-    test_inum_automount
-
-    test_ipath
-
-    test_iregex
-
-    test_iwholename
-
-    test_lname
-    test_L_lname
-
-    test_ls
-    test_L_ls
-
-    test_maxdepth
-
-    test_mindepth
-
-    test_mount
-    test_L_mount
-
-    test_name_slash
-    test_name_slashes
-
-    test_H_newer
-
-    test_newerma
-    test_newermt
-    test_newermt_epoch_minus_one
-
-    test_ok_closed_stdin
-    test_ok_nothing
-
-    test_okdir_closed_stdin
-    test_okdir_plus_semicolon
-
-    test_perm_000_slash
-    test_perm_222_slash
-    test_perm_644_slash
-    test_perm_symbolic_slash
-    test_perm_leading_plus_symbolic_slash
-
-    test_print_error
-
-    test_print0
-
-    test_printf
-    test_printf_empty
-    test_printf_slash
-    test_printf_slashes
-    test_printf_trailing_slash
-    test_printf_trailing_slashes
-    test_printf_flags
-    test_printf_types
-    test_printf_escapes
-    test_printf_times
-    test_printf_leak
-    test_printf_nul
-    test_printf_Y_error
-    test_printf_H
-    test_printf_u_g_ulimit
-    test_printf_l_nonlink
-
-    test_quit
-    test_quit_child
-    test_quit_depth
-    test_quit_depth_child
-    test_quit_after_print
-    test_quit_before_print
-
-    test_readable
-
-    test_regex
-    test_regex_parens
-    test_regex_error
-    test_regex_invalid_utf8
-
-    test_regextype_posix_basic
-    test_regextype_posix_extended
-    test_regextype_ed
-    test_regextype_emacs
-    test_regextype_grep
-    test_regextype_sed
-
-    test_samefile
-    test_samefile_symlink
-    test_H_samefile_symlink
-    test_L_samefile_symlink
-    test_samefile_broken
-    test_H_samefile_broken
-    test_L_samefile_broken
-    test_samefile_notdir
-    test_H_samefile_notdir
-    test_L_samefile_notdir
-
-    test_size_big
-
-    test_true
-
-    test_uid
-    test_uid_plus
-    test_uid_plus_plus
-    test_uid_minus
-    test_uid_minus_plus
-
-    test_wholename
-
-    test_writable
-
-    test_xtype_l
-    test_xtype_f
-    test_L_xtype_l
-    test_L_xtype_f
-    test_xtype_bind_mount
-
-    # Optimizer tests
-    test_and_purity
-    test_not_reachability
-    test_comma_reachability
-    test_and_false_or_true
-    test_comma_redundant_true
-    test_comma_redundant_false
-)
-
-bfs_tests=(
-    # General parsing
-    test_path_flag_expr
-    test_path_expr_flag
-    test_flag_expr_path
-    test_expr_flag_path
-    test_expr_path_flag
-
-    test_unexpected_operator
-
-    test_typo
-
-    # Flags
-
-    test_D_multi
-    test_D_all
-
-    test_O0
-    test_O1
-    test_O2
-    test_O3
-    test_Ofast
-
-    test_S_bfs
-    test_S_dfs
-    test_S_ids
-
-    # Special forms
-
-    test_exclude_name
-    test_exclude_depth
-    test_exclude_mindepth
-    test_exclude_print
-    test_exclude_exclude
-
-    # Primaries
-
-    test_capable
-    test_L_capable
-
-    test_color
-    test_color_L
-    test_color_rs_lc_rc_ec
-    test_color_escapes
-    test_color_nul
-    test_color_ln_target
-    test_color_L_ln_target
-    test_color_mh
-    test_color_mh0
-    test_color_or
-    test_color_mi
-    test_color_or_mi
-    test_color_or_mi0
-    test_color_or0_mi
-    test_color_or0_mi0
-    test_color_su_sg0
-    test_color_su0_sg
-    test_color_su0_sg0
-    test_color_st_tw_ow0
-    test_color_st_tw0_ow
-    test_color_st_tw0_ow0
-    test_color_st0_tw_ow
-    test_color_st0_tw_ow0
-    test_color_st0_tw0_ow
-    test_color_st0_tw0_ow0
-    test_color_ext
-    test_color_ext0
-    test_color_ext_override
-    test_color_ext_underride
-    test_color_missing_colon
-    test_color_no_stat
-    test_color_L_no_stat
-    test_color_star
-    test_color_ls
-
-    test_exec_flush_fprint
-    test_exec_flush_fprint_fail
-
-    test_execdir_plus
-
-    test_fprint_duplicate_stdout
-    test_fprint_error_stdout
-    test_fprint_error_stderr
-
-    test_help
-
-    test_hidden
-    test_hidden_root
-
-    test_links_noarg
-    test_links_empty
-    test_links_negative
-    test_links_invalid
-
-    test_newerma_nonexistent
-    test_newermt_invalid
-    test_newermq
-    test_newerqm
-
-    test_nohidden
-    test_nohidden_depth
-
-    test_perm_symbolic_trailing_comma
-    test_perm_symbolic_double_comma
-    test_perm_symbolic_missing_action
-    test_perm_leading_plus_symbolic
-
-    test_printf_w
-    test_printf_incomplete_escape
-    test_printf_invalid_escape
-    test_printf_incomplete_format
-    test_printf_invalid_format
-    test_printf_duplicate_flag
-    test_printf_must_be_numeric
-    test_printf_color
-
-    test_type_multi
-
-    test_unique
-    test_unique_depth
-    test_L_unique
-    test_L_unique_loops
-    test_L_unique_depth
-
-    test_version
-
-    test_xtype_multi
-
-    # Optimizer tests
-    test_data_flow_hidden
-    test_xtype_reorder
-    test_xtype_depth
-
-    # PATH_MAX handling
-    test_deep_strict
-
-    # Error handling
-    test_stderr_fails_silently
-    test_stderr_fails_loudly
-)
-
-if [ "$DEFAULT" ]; then
-    POSIX=yes
-    BSD=yes
-    GNU=yes
-    ALL=yes
-fi
-
-if [ ! "$EXPLICIT" ]; then
-    [ "$POSIX" ] && enabled_tests+=("${posix_tests[@]}")
-    [ "$BSD" ] && enabled_tests+=("${bsd_tests[@]}")
-    [ "$GNU" ] && enabled_tests+=("${gnu_tests[@]}")
-    [ "$ALL" ] && enabled_tests+=("${bfs_tests[@]}")
-fi
-
-eval "enabled_tests=($(printf '%q\n' "${enabled_tests[@]}" | sort -u))"
-
-function _realpath() {
-    (
-        cd "$(dirname -- "$1")"
-        echo "$PWD/$(basename -- "$1")"
-    )
-}
-
-ROOT=$(dirname -- "${BASH_SOURCE[0]}")
-
-# Try to resolve the path to $BFS before we cd, while also supporting
-# --bfs="./bfs -S ids"
-read -a BFS <<<"${BFS:-$ROOT/bfs}"
-BFS[0]=$(_realpath "$(command -v "${BFS[0]}")")
-
-BUILD=$(_realpath "$ROOT/build")
-TESTS=$(_realpath "$ROOT/tests")
-
-# The temporary directory that will hold our test data
-TMP=$(mktemp -d "${TMPDIR:-/tmp}"/bfs.XXXXXXXXXX)
-chown "$(id -u):$(id -g)" "$TMP"
-
-# Clean up temporary directories on exit
-function cleanup() {
-    # Don't force rm to deal with long paths
-    for dir in "$TMP"/deep/*/*; do
-        if [ -d "$dir" ]; then
-            (cd "$dir" && rm -rf *)
-        fi
-    done
-
-    # In case a test left anything weird in scratch/
-    if [ -e "$TMP"/scratch ]; then
-        chmod -R +rX "$TMP"/scratch
-    fi
-
-    rm -rf "$TMP"
-}
-
-if [ "$CLEAN" ]; then
-    trap cleanup EXIT
-else
-    echo "Test files saved to $TMP"
-fi
-
-# Install a file, creating any parent directories
-function installp() {
-    local target="${@: -1}"
-    mkdir -p "${target%/*}"
-    install "$@"
-}
-
-# Prefer GNU touch to work around https://apple.stackexchange.com/a/425730/397839
-if command -v gtouch &>/dev/null; then
-    TOUCH=gtouch
-else
-    TOUCH=touch
-fi
-
-# Like a mythical touch -p
-function touchp() {
-    for arg; do
-        installp -m644 /dev/null "$arg"
-    done
-}
-
-# Creates a simple file+directory structure for tests
-function make_basic() {
-    touchp "$1/a"
-    touchp "$1/b"
-    touchp "$1/c/d"
-    touchp "$1/e/f"
-    mkdir -p "$1/g/h"
-    mkdir -p "$1/i"
-    touchp "$1/j/foo"
-    touchp "$1/k/foo/bar"
-    touchp "$1/l/foo/bar/baz"
-    echo baz >"$1/l/foo/bar/baz"
-}
-make_basic "$TMP/basic"
-
-# Creates a file+directory structure with various permissions for tests
-function make_perms() {
-    installp -m000 /dev/null "$1/0"
-    installp -m444 /dev/null "$1/r"
-    installp -m222 /dev/null "$1/w"
-    installp -m644 /dev/null "$1/rw"
-    installp -m555 /dev/null "$1/rx"
-    installp -m311 /dev/null "$1/wx"
-    installp -m755 /dev/null "$1/rwx"
-}
-make_perms "$TMP/perms"
-
-# Creates a file+directory structure with various symbolic and hard links
-function make_links() {
-    touchp "$1/file"
-    ln -s file "$1/symlink"
-    ln "$1/file" "$1/hardlink"
-    ln -s nowhere "$1/broken"
-    ln -s symlink/file "$1/notdir"
-    mkdir -p "$1/deeply/nested/dir"
-    touchp "$1/deeply/nested/file"
-    ln -s file "$1/deeply/nested/link"
-    ln -s nowhere "$1/deeply/nested/broken"
-    ln -s deeply/nested "$1/skip"
-}
-make_links "$TMP/links"
-
-# Creates a file+directory structure with symbolic link loops
-function make_loops() {
-    touchp "$1/file"
-    ln -s file "$1/symlink"
-    ln -s nowhere "$1/broken"
-    ln -s symlink/file "$1/notdir"
-    ln -s loop "$1/loop"
-    mkdir -p "$1/deeply/nested/dir"
-    ln -s ../../deeply "$1/deeply/nested/loop"
-    ln -s deeply/nested/loop/nested "$1/skip"
-}
-make_loops "$TMP/loops"
-
-# Creates a file+directory structure with varying timestamps
-function make_times() {
-    mkdir -p "$1"
-    $TOUCH -t 199112140000 "$1/a"
-    $TOUCH -t 199112140001 "$1/b"
-    $TOUCH -t 199112140002 "$1/c"
-    ln -s a "$1/l"
-    $TOUCH -h -t 199112140003 "$1/l"
-    $TOUCH -t 199112140004 "$1"
-}
-make_times "$TMP/times"
-
-# Creates a file+directory structure with various weird file/directory names
-function make_weirdnames() {
-    touchp "$1/-/a"
-    touchp "$1/(/b"
-    touchp "$1/(-/c"
-    touchp "$1/!/d"
-    touchp "$1/!-/e"
-    touchp "$1/,/f"
-    touchp "$1/)/g"
-    touchp "$1/.../h"
-    touchp "$1/\\/i"
-    touchp "$1/ /j"
-    touchp "$1/[/k"
-}
-make_weirdnames "$TMP/weirdnames"
-
-# Creates a very deep directory structure for testing PATH_MAX handling
-function make_deep() {
-    mkdir -p "$1"
-
-    # $name will be 255 characters, aka _XOPEN_NAME_MAX
-    local name="0123456789ABCDEF"
-    name="${name}${name}${name}${name}"
-    name="${name}${name}${name}${name}"
-    name="${name:0:255}"
-
-    for i in {0..9} A B C D E F; do
-        (
-            mkdir "$1/$i"
-            cd "$1/$i"
-
-            # 16 * 256 == 4096 == PATH_MAX
-            for _ in {1..16}; do
-                mkdir "$name"
-                cd "$name" 2>/dev/null
-            done
-
-            $TOUCH "$name"
-        )
-    done
-}
-make_deep "$TMP/deep"
-
-# Creates a directory structure with many different types, and therefore colors
-function make_rainbow() {
-    touchp "$1/file.txt"
-    touchp "$1/file.dat"
-    touchp "$1/star".{gz,tar,tar.gz}
-    ln -s file.txt "$1/link.txt"
-    touchp "$1/mh1"
-    ln "$1/mh1" "$1/mh2"
-    mkfifo "$1/pipe"
-    # TODO: block
-    ln -s /dev/null "$1/chardev_link"
-    ln -s nowhere "$1/broken"
-    "$BUILD/tests/mksock" "$1/socket"
-    touchp "$1"/s{u,g,ug}id
-    chmod u+s "$1"/su{,g}id
-    chmod g+s "$1"/s{u,}gid
-    mkdir "$1/ow" "$1"/sticky{,_ow}
-    chmod o+w "$1"/*ow
-    chmod +t "$1"/sticky*
-    touchp "$1"/exec.sh
-    chmod +x "$1"/exec.sh
-}
-make_rainbow "$TMP/rainbow"
-
-# Creates a scratch directory that tests can modify
-function make_scratch() {
-    mkdir -p "$1"
-}
-make_scratch "$TMP/scratch"
-
-# Close stdin so bfs doesn't think we're interactive
-exec </dev/null
-
-if [ "$VERBOSE_COMMANDS" ]; then
-    # dup stdout for verbose logging even when redirected
-    exec 3>&1
-fi
-
-function bfs_verbose() {
-    if [ "$VERBOSE_COMMANDS" ]; then
-        if [ -t 3 ]; then
-            printf "${GRN}%q${RST} " "${BFS[@]}" >&3
-
-            local expr_started=
-            for arg; do
-                if [[ $arg == -[A-Z]* ]]; then
-                    printf "${CYN}%q${RST} " "$arg" >&3
-                elif [[ $arg == [\(!] || $arg == -[ao] || $arg == -and || $arg == -or || $arg == -not ]]; then
-                    expr_started=yes
-                    printf "${RED}%q${RST} " "$arg" >&3
-                elif [[ $expr_started && $arg == [\),] ]]; then
-                    printf "${RED}%q${RST} " "$arg" >&3
-                elif [[ $arg == -?* ]]; then
-                    expr_started=yes
-                    printf "${BLU}%q${RST} " "$arg" >&3
-                elif [ "$expr_started" ]; then
-                    printf "${BLD}%q${RST} " "$arg" >&3
-                else
-                    printf "${MAG}%q${RST} " "$arg" >&3
-                fi
-            done
-        else
-            printf '%q ' "${BFS[@]}" "$@" >&3
-        fi
-        printf '\n' >&3
-    fi
-}
-
-function invoke_bfs() {
-    bfs_verbose "$@"
-    "${BFS[@]}" "$@"
-}
-
-# Expect a command to fail, but not crash
-function fail() {
-    "$@"
-    local STATUS="$?"
-
-    if ((STATUS > 125)); then
-        exit "$STATUS"
-    elif ((STATUS > 0)); then
-        return 0
-    else
-        return 1
-    fi
-}
-
-# Detect colored diff support
-if [ -t 2 ] && diff --color=always /dev/null /dev/null 2>/dev/null; then
-    DIFF="diff --color=always"
-else
-    DIFF="diff"
-fi
-
-# Return value when bfs fails
-EX_BFS=10
-# Return value when a difference is detected
-EX_DIFF=20
-# Return value when a test is skipped
-EX_SKIP=77
-
-function bfs_diff() (
-    bfs_verbose "$@"
-
-    # Close the dup()'d stdout to make sure we have enough fd's for the process
-    # substitution, even with low ulimit -n
-    exec 3>&-
-
-    local CALLER
-    for CALLER in "${FUNCNAME[@]}"; do
-        if [[ $CALLER == test_* ]]; then
-            break
-        fi
-    done
-
-    local EXPECTED="$TESTS/$CALLER.out"
-    if [ "$UPDATE" ]; then
-        local ACTUAL="$EXPECTED"
-    else
-        local ACTUAL="$TMP/$CALLER.out"
-    fi
-
-    "${BFS[@]}" "$@" | sort >"$ACTUAL"
-    local STATUS="${PIPESTATUS[0]}"
-
-    if [ ! "$UPDATE" ]; then
-        $DIFF -u "$EXPECTED" "$ACTUAL" >&2 || return $EX_DIFF
-    fi
-
-    if [ "$STATUS" -eq 0 ]; then
-        return 0
-    else
-        return $EX_BFS
-    fi
-)
-
-function skip() {
-    exit $EX_SKIP
-}
-
-function skip_if() {
-    if "$@"; then
-        skip
-    fi
-}
-
-function skip_unless() {
-    skip_if fail "$@"
-}
-
-function closefrom() {
-    if [ -d /proc/self/fd ]; then
-        local fds=/proc/self/fd
-    else
-        local fds=/dev/fd
-    fi
-
-    for fd in "$fds"/*; do
-        if [ ! -e "$fd" ]; then
-            continue
-        fi
-
-        local fd="${fd##*/}"
-        if [ "$fd" -ge "$1" ]; then
-            eval "exec ${fd}<&-"
-        fi
-    done
-}
-
-function inum() {
-    ls -id "$@" | awk '{ print $1 }'
-}
-
-
-cd "$TMP"
-set +e
-
-# Test cases
-
-function test_basic() {
-    bfs_diff basic
-}
-
-function test_type_d() {
-    bfs_diff basic -type d
-}
-
-function test_type_f() {
-    bfs_diff basic -type f
-}
-
-function test_type_l() {
-    bfs_diff links/skip -type l
-}
-
-function test_H_type_l() {
-    bfs_diff -H links/skip -type l
-}
-
-function test_L_type_l() {
-    bfs_diff -L links/skip -type l
-}
-
-function test_type_multi() {
-    bfs_diff links -type f,d,c
-}
-
-function test_mindepth() {
-    bfs_diff basic -mindepth 1
-}
-
-function test_maxdepth() {
-    bfs_diff basic -maxdepth 1
-}
-
-function test_depth() {
-    bfs_diff basic -depth
-}
-
-function test_depth_slash() {
-    bfs_diff basic/ -depth
-}
-
-function test_depth_mindepth_1() {
-    bfs_diff basic -mindepth 1 -depth
-}
-
-function test_depth_mindepth_2() {
-    bfs_diff basic -mindepth 2 -depth
-}
-
-function test_depth_maxdepth_1() {
-    bfs_diff basic -maxdepth 1 -depth
-}
-
-function test_depth_maxdepth_2() {
-    bfs_diff basic -maxdepth 2 -depth
-}
-
-function test_depth_error() {
-    rm -rf scratch/*
-    touchp scratch/foo/bar
-    chmod a-r scratch/foo
-
-    bfs_diff scratch -depth
-    local ret=$?
-
-    chmod +r scratch/foo
-    rm -rf scratch/*
-
-    [ $ret -eq $EX_BFS ]
-}
-
-function test_name() {
-    bfs_diff basic -name '*f*'
-}
-
-function test_name_root() {
-    bfs_diff basic/a -name a
-}
-
-function test_name_root_depth() {
-    bfs_diff basic/g -depth -name g
-}
-
-function test_name_trailing_slash() {
-    bfs_diff basic/g/ -name g
-}
-
-function test_name_slash() {
-    bfs_diff / -maxdepth 0 -name /
-}
-
-function test_name_slashes() {
-    bfs_diff /// -maxdepth 0 -name /
-}
-
-function test_name_star_star() {
-    bfs_diff basic -name '**f**'
-}
-
-function test_name_character_class() {
-    bfs_diff basic -name '[e-g][!a-n][!p-z]'
-}
-
-function test_name_bracket() {
-    # fnmatch() is broken on macOS
-    skip_if test "$UNAME" = "Darwin"
-
-    # An unclosed [ should be matched literally
-    bfs_diff weirdnames -name '['
-}
-
-function test_name_backslash() {
-    # An unescaped \ doesn't match
-    bfs_diff weirdnames -name '\'
-}
-
-function test_name_double_backslash() {
-    # An escaped \\ matches
-    bfs_diff weirdnames -name '\\'
-}
-
-function test_path() {
-    bfs_diff basic -path 'basic/*f*'
-}
-
-function test_wholename() {
-    bfs_diff basic -wholename 'basic/*f*'
-}
-
-function test_true() {
-    bfs_diff basic -true
-}
-
-function test_false() {
-    bfs_diff basic -false
-}
-
-function test_executable() {
-    bfs_diff perms -executable
-}
-
-function test_readable() {
-    bfs_diff perms -readable
-}
-
-function test_writable() {
-    bfs_diff perms -writable
-}
-
-function test_empty() {
-    bfs_diff basic -empty
-}
-
-function test_empty_special() {
-    bfs_diff rainbow -empty
-}
-
-function test_gid() {
-    bfs_diff basic -gid "$(id -g)"
-}
-
-function test_gid_plus() {
-    skip_if test "$(id -g)" -eq 0
-    bfs_diff basic -gid +0
-}
-
-function test_gid_plus_plus() {
-    skip_if test "$(id -g)" -eq 0
-    bfs_diff basic -gid ++0
-}
-
-function test_gid_minus() {
-    bfs_diff basic -gid "-$(($(id -g) + 1))"
-}
-
-function test_gid_minus_plus() {
-    bfs_diff basic -gid "-+$(($(id -g) + 1))"
-}
-
-function test_uid() {
-    bfs_diff basic -uid "$(id -u)"
-}
-
-function test_uid_plus() {
-    skip_if test "$(id -u)" -eq 0
-    bfs_diff basic -uid +0
-}
-
-function test_uid_plus_plus() {
-    skip_if test "$(id -u)" -eq 0
-    bfs_diff basic -uid ++0
-}
-
-function test_uid_minus() {
-    bfs_diff basic -uid "-$(($(id -u) + 1))"
-}
-
-function test_uid_minus_plus() {
-    bfs_diff basic -uid "-+$(($(id -u) + 1))"
-}
-
-function test_newer() {
-    bfs_diff times -newer times/a
-}
-
-function test_newer_link() {
-    bfs_diff times -newer times/l
-}
-
-function test_anewer() {
-    bfs_diff times -anewer times/a
-}
-
-function test_asince() {
-    bfs_diff times -asince 1991-12-14T00:01
-}
-
-function test_links() {
-    bfs_diff links -type f -links 2
-}
-
-function test_links_plus() {
-    bfs_diff links -type f -links +1
-}
-
-function test_links_minus() {
-    bfs_diff links -type f -links -2
-}
-
-function test_links_noarg() {
-    fail invoke_bfs links -links
-}
-
-function test_links_empty() {
-    fail invoke_bfs links -links ''
-}
-
-function test_links_negative() {
-    fail invoke_bfs links -links +-1
-}
-
-function test_links_invalid() {
-    fail invoke_bfs links -links ASDF
-}
-
-function test_P() {
-    bfs_diff -P links/deeply/nested/dir
-}
-
-function test_P_slash() {
-    bfs_diff -P links/deeply/nested/dir/
-}
-
-function test_H() {
-    bfs_diff -H links/deeply/nested/dir
-}
-
-function test_H_slash() {
-    bfs_diff -H links/deeply/nested/dir/
-}
-
-function test_H_broken() {
-    bfs_diff -H links/broken
-}
-
-function test_H_notdir() {
-    bfs_diff -H links/notdir
-}
-
-function test_H_newer() {
-    bfs_diff -H times -newer times/l
-}
-
-function test_H_loops() {
-    bfs_diff -H loops/deeply/nested/loop
-}
-
-function test_L() {
-    bfs_diff -L links
-}
-
-function test_L_broken() {
-    bfs_diff -H links/broken
-}
-
-function test_L_notdir() {
-    bfs_diff -H links/notdir
-}
-
-function test_L_loops() {
-    # POSIX says it's okay to either stop or keep going on seeing a filesystem
-    # loop, as long as a diagnostic is printed
-    local errors=$(invoke_bfs -L loops 2>&1 >/dev/null)
-    [ -n "$errors" ]
-}
-
-function test_L_loops_continue() {
-    bfs_diff -L loops
-    [ $? -eq $EX_BFS ]
-}
-
-function test_X() {
-    bfs_diff -X weirdnames
-    [ $? -eq $EX_BFS ]
-}
-
-function test_follow() {
-    bfs_diff links -follow
-}
-
-function test_L_depth() {
-    bfs_diff -L links -depth
-}
-
-function test_samefile() {
-    bfs_diff links -samefile links/file
-}
-
-function test_samefile_symlink() {
-    bfs_diff links -samefile links/symlink
-}
-
-function test_H_samefile_symlink() {
-    bfs_diff -H links -samefile links/symlink
-}
-
-function test_L_samefile_symlink() {
-    bfs_diff -L links -samefile links/symlink
-}
-
-function test_samefile_broken() {
-    bfs_diff links -samefile links/broken
-}
-
-function test_H_samefile_broken() {
-    bfs_diff -H links -samefile links/broken
-}
-
-function test_L_samefile_broken() {
-    bfs_diff -L links -samefile links/broken
-}
-
-function test_samefile_notdir() {
-    bfs_diff links -samefile links/notdir
-}
-
-function test_H_samefile_notdir() {
-    bfs_diff -H links -samefile links/notdir
-}
-
-function test_L_samefile_notdir() {
-    bfs_diff -L links -samefile links/notdir
-}
-
-function test_xtype_l() {
-    bfs_diff links -xtype l
-}
-
-function test_xtype_f() {
-    bfs_diff links -xtype f
-}
-
-function test_L_xtype_l() {
-    bfs_diff -L links -xtype l
-}
-
-function test_L_xtype_f() {
-    bfs_diff -L links -xtype f
-}
-
-function test_xtype_multi() {
-    bfs_diff links -xtype f,d,c
-}
-
-function test_xtype_reorder() {
-    # Make sure -xtype is not reordered in front of anything -- if -xtype runs
-    # before -links 100, it will report an ELOOP error
-    bfs_diff loops -links 100 -xtype l
-    invoke_bfs loops -links 100 -xtype l
-}
-
-function test_xtype_depth() {
-    # Make sure -xtype is considered side-effecting for facts_when_impure
-    fail invoke_bfs loops -xtype l -depth 100
-}
-
-function test_iname() {
-    skip_unless invoke_bfs -quit -iname PATTERN
-    bfs_diff basic -iname '*F*'
-}
-
-function test_ipath() {
-    skip_unless invoke_bfs -quit -ipath PATTERN
-    bfs_diff basic -ipath 'basic/*F*'
-}
-
-function test_iwholename() {
-    skip_unless invoke_bfs -quit -iwholename PATTERN
-    bfs_diff basic -iwholename 'basic/*F*'
-}
-
-function test_lname() {
-    bfs_diff links -lname '[aq]'
-}
-
-function test_ilname() {
-    skip_unless invoke_bfs -quit -ilname PATTERN
-    bfs_diff links -ilname '[AQ]'
-}
-
-function test_L_lname() {
-    bfs_diff -L links -lname '[aq]'
-}
-
-function test_L_ilname() {
-    skip_unless invoke_bfs -quit -ilname PATTERN
-    bfs_diff -L links -ilname '[AQ]'
-}
-
-function test_user_name() {
-    bfs_diff basic -user "$(id -un)"
-}
-
-function test_user_id() {
-    bfs_diff basic -user "$(id -u)"
-}
-
-function test_user_nouser() {
-    # Regression test: this was wrongly optimized to -false
-    bfs_diff basic -user "$(id -u)" \! -nouser
-}
-
-function test_group_name() {
-    bfs_diff basic -group "$(id -gn)"
-}
-
-function test_group_id() {
-    bfs_diff basic -group "$(id -g)"
-}
-
-function test_group_nogroup() {
-    # Regression test: this was wrongly optimized to -false
-    bfs_diff basic -group "$(id -g)" \! -nogroup
-}
-
-function test_daystart() {
-    bfs_diff basic -daystart -mtime 0
-}
-
-function test_daystart_twice() {
-    bfs_diff basic -daystart -daystart -mtime 0
-}
-
-function test_newerma() {
-    bfs_diff times -newerma times/a
-}
-
-function test_newermt() {
-    bfs_diff times -newermt 1991-12-14T00:01
-}
-
-function test_newermt_epoch_minus_one() {
-    bfs_diff times -newermt 1969-12-31T23:59:59Z
-}
-
-function test_newermt_invalid() {
-    fail invoke_bfs times -newermt not_a_date_time
-}
-
-function test_newerma_nonexistent() {
-    fail invoke_bfs times -newerma basic/nonexistent
-}
-
-function test_newermq() {
-    fail invoke_bfs times -newermq times/a
-}
-
-function test_newerqm() {
-    fail invoke_bfs times -newerqm times/a
-}
-
-function test_size() {
-    bfs_diff basic -type f -size 0
-}
-
-function test_size_plus() {
-    bfs_diff basic -type f -size +0
-}
-
-function test_size_bytes() {
-    bfs_diff basic -type f -size +0c
-}
-
-function test_size_big() {
-    bfs_diff basic -size 9223372036854775807
-}
-
-function test_exec() {
-    bfs_diff basic -exec echo {} \;
-}
-
-function test_exec_nothing() {
-    # Regression test: don't segfault on missing command
-    fail invoke_bfs basic -exec \;
-}
-
-function test_exec_plus() {
-    bfs_diff basic -exec "$TESTS/sort-args.sh" {} +
-}
-
-function test_exec_plus_status() {
-    # -exec ... {} + should always return true, but if the command fails, bfs
-    # should exit with a non-zero status
-    bfs_diff basic -exec false {} + -print
-    (($? == EX_BFS))
-}
-
-function test_exec_plus_semicolon() {
-    # POSIX says:
-    #     Only a <plus-sign> that immediately follows an argument containing only the two characters "{}"
-    #     shall punctuate the end of the primary expression. Other uses of the <plus-sign> shall not be
-    #     treated as special.
-    bfs_diff basic -exec echo foo {} bar + baz \;
-}
-
-function test_exec_substring() {
-    bfs_diff basic -exec echo '-{}-' \;
-}
-
-function test_exec_flush() {
-    # IO streams should be flushed before executing programs
-    bfs_diff basic -print0 -exec echo found \;
-}
-
-function test_exec_flush_fail() {
-    # Failure to flush streams before exec should be caught
-    skip_unless test -e /dev/full
-    fail invoke_bfs basic -print0 -exec true \; >/dev/full
-}
-
-function test_exec_flush_fprint() {
-    # Even non-stdstreams should be flushed
-    bfs_diff basic/a -fprint scratch/foo -exec cat scratch/foo \;
-}
-
-function test_exec_flush_fprint_fail() {
-    skip_unless test -e /dev/full
-    fail invoke_bfs basic/a -fprint /dev/full -exec true \;
-}
-
-function test_exec_plus_flush() {
-    bfs_diff basic/a -print0 -exec echo found {} +
-}
-
-function test_exec_plus_flush_fail() {
-    skip_unless test -e /dev/full
-    fail invoke_bfs basic/a -print0 -exec echo found {} + >/dev/full
-}
-
-function test_execdir() {
-    bfs_diff basic -execdir echo {} \;
-}
-
-function test_execdir_plus() {
-    local tree=$(invoke_bfs -D tree 2>&1 -quit)
-
-    if [[ "$tree" == *"-S dfs"* ]]; then
-        skip
-    fi
-
-    bfs_diff basic -execdir "$TESTS/sort-args.sh" {} +
-}
-
-function test_execdir_substring() {
-    bfs_diff basic -execdir echo '-{}-' \;
-}
-
-function test_execdir_plus_semicolon() {
-    bfs_diff basic -execdir echo foo {} bar + baz \;
-}
-
-function test_execdir_pwd() {
-    local TMP_REAL=$(cd "$TMP" && pwd)
-    local OFFSET=$((${#TMP_REAL} + 2))
-    bfs_diff basic -execdir bash -c "pwd | cut -b$OFFSET-" \;
-}
-
-function test_execdir_slash() {
-    # Don't prepend ./ for absolute paths in -execdir
-    bfs_diff / -maxdepth 0 -execdir echo {} \;
-}
-
-function test_execdir_slash_pwd() {
-    bfs_diff / -maxdepth 0 -execdir pwd \;
-}
-
-function test_execdir_slashes() {
-    bfs_diff /// -maxdepth 0 -execdir echo {} \;
-}
-
-function test_execdir_ulimit() {
-    rm -rf scratch/*
-    mkdir -p scratch/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z
-    mkdir -p scratch/a/b/c/d/e/f/g/h/i/j/k/l/m/0/1/2/3/4/5/6/7/8/9/A/B/C
-
-    closefrom 4
-    ulimit -n 13
-    bfs_diff scratch -execdir echo {} \;
-}
-
-function test_weird_names() {
-    cd weirdnames
-    bfs_diff '-' '(-' '!-' ',' ')' './(' './!' \( \! -print -o -print \)
-}
-
-function test_flag_weird_names() {
-    cd weirdnames
-    bfs_diff -L '-' '(-' '!-' ',' ')' './(' './!' \( \! -print -o -print \)
-}
-
-function test_flag_comma() {
-    # , is a filename until a non-flag is seen
-    cd weirdnames
-    bfs_diff -L ',' -print
-}
-
-function test_follow_comma() {
-    # , is an operator after a non-flag is seen
-    cd weirdnames
-    bfs_diff -follow ',' -print
-}
-
-function test_fprint() {
-    invoke_bfs basic -fprint scratch/test_fprint.out
-    sort -o scratch/test_fprint.out scratch/test_fprint.out
-
-    if [ "$UPDATE" ]; then
-        cp {scratch,"$TESTS"}/test_fprint.out
-    else
-        $DIFF -u {"$TESTS",scratch}/test_fprint.out
-    fi
-}
-
-function test_fprint_duplicate() {
-    touchp scratch/test_fprint_duplicate.out
-    ln scratch/test_fprint_duplicate.out scratch/test_fprint_duplicate.hard
-    ln -s test_fprint_duplicate.out scratch/test_fprint_duplicate.soft
-
-    invoke_bfs basic -fprint scratch/test_fprint_duplicate.out -fprint scratch/test_fprint_duplicate.hard -fprint scratch/test_fprint_duplicate.soft
-    sort -o scratch/test_fprint_duplicate.out scratch/test_fprint_duplicate.out
-
-    if [ "$UPDATE" ]; then
-        cp {scratch,"$TESTS"}/test_fprint_duplicate.out
-    else
-        $DIFF -u {"$TESTS",scratch}/test_fprint_duplicate.out
-    fi
-}
-
-function test_fprint_duplicate_stdout() {
-    touchp scratch/test_fprint_duplicate_stdout.out
-
-    invoke_bfs basic -fprint scratch/test_fprint_duplicate_stdout.out -print >scratch/test_fprint_duplicate_stdout.out
-    sort -o scratch/test_fprint_duplicate_stdout.out{,}
-
-    if [ "$UPDATE" ]; then
-        cp {scratch,"$TESTS"}/test_fprint_duplicate_stdout.out
-    else
-        $DIFF -u {"$TESTS",scratch}/test_fprint_duplicate_stdout.out
-    fi
-}
-
-function test_fprint_noarg() {
-    fail invoke_bfs basic -fprint
-}
-
-function test_fprint_nonexistent() {
-    fail invoke_bfs basic -fprint scratch/nonexistent/path
-}
-
-function test_fprint_truncate() {
-    printf "basic\nbasic\n" >scratch/test_fprint_truncate.out
-
-    invoke_bfs basic -maxdepth 0 -fprint scratch/test_fprint_truncate.out
-    sort -o scratch/test_fprint_truncate.out scratch/test_fprint_truncate.out
-
-    if [ "$UPDATE" ]; then
-        cp {scratch,"$TESTS"}/test_fprint_truncate.out
-    else
-        $DIFF -u {"$TESTS",scratch}/test_fprint_truncate.out
-    fi
-}
-
-function test_double_dash() {
-    cd basic
-    bfs_diff -- . -type f
-}
-
-function test_flag_double_dash() {
-    cd basic
-    bfs_diff -L -- . -type f
-}
-
-function test_ignore_readdir_race() {
-    rm -rf scratch/*
-    $TOUCH scratch/{foo,bar}
-
-    # -links 1 forces a stat() call, which will fail for the second file
-    invoke_bfs scratch -mindepth 1 -ignore_readdir_race -links 1 -exec "$TESTS/remove-sibling.sh" {} \;
-}
-
-function test_ignore_readdir_race_root() {
-    # Make sure -ignore_readdir_race doesn't suppress ENOENT at the root
-    fail invoke_bfs basic/nonexistent -ignore_readdir_race
-}
-
-function test_ignore_readdir_race_notdir() {
-    # Check -ignore_readdir_race handling when a directory is replaced with a file
-    rm -rf scratch/*
-    touchp scratch/foo/bar
-
-    invoke_bfs scratch -mindepth 1 -ignore_readdir_race -execdir rm -r {} \; -execdir $TOUCH {} \;
-}
-
-function test_perm_000() {
-    bfs_diff perms -perm 000
-}
-
-function test_perm_000_minus() {
-    bfs_diff perms -perm -000
-}
-
-function test_perm_000_slash() {
-    bfs_diff perms -perm /000
-}
-
-function test_perm_000_plus() {
-    bfs_diff perms -perm +000
-}
-
-function test_perm_222() {
-    bfs_diff perms -perm 222
-}
-
-function test_perm_222_minus() {
-    bfs_diff perms -perm -222
-}
-
-function test_perm_222_slash() {
-    bfs_diff perms -perm /222
-}
-
-function test_perm_222_plus() {
-    bfs_diff perms -perm +222
-}
-
-function test_perm_644() {
-    bfs_diff perms -perm 644
-}
-
-function test_perm_644_minus() {
-    bfs_diff perms -perm -644
-}
-
-function test_perm_644_slash() {
-    bfs_diff perms -perm /644
-}
-
-function test_perm_644_plus() {
-    bfs_diff perms -perm +644
-}
-
-function test_perm_symbolic() {
-    bfs_diff perms -perm a+r,u=wX,g+wX-w
-}
-
-function test_perm_symbolic_minus() {
-    bfs_diff perms -perm -a+r,u=wX,g+wX-w
-}
-
-function test_perm_symbolic_slash() {
-    bfs_diff perms -perm /a+r,u=wX,g+wX-w
-}
-
-function test_perm_symbolic_trailing_comma() {
-    fail invoke_bfs perms -perm a+r,
-}
-
-function test_perm_symbolic_double_comma() {
-    fail invoke_bfs perms -perm a+r,,u+w
-}
-
-function test_perm_symbolic_missing_action() {
-    fail invoke_bfs perms -perm a
-}
-
-function test_perm_leading_plus_symbolic() {
-    bfs_diff perms -perm +rwx
-}
-
-function test_perm_leading_plus_symbolic_minus() {
-    bfs_diff perms -perm -+rwx
-}
-
-function test_perm_leading_plus_symbolic_slash() {
-    bfs_diff perms -perm /+rwx
-}
-
-function test_permcopy() {
-    bfs_diff perms -perm u+rw,g+u-w,o=g
-}
-
-function test_perm_setid() {
-    bfs_diff rainbow -perm -u+s -o -perm -g+s
-}
-
-function test_perm_sticky() {
-    bfs_diff rainbow -perm -a+t
-}
-
-function test_prune() {
-    bfs_diff basic -name foo -prune
-}
-
-function test_prune_file() {
-    bfs_diff basic -print -name '?' -prune
-}
-
-function test_prune_or_print() {
-    bfs_diff basic -name foo -prune -o -print
-}
-
-function test_not_prune() {
-    bfs_diff basic \! \( -name foo -prune \)
-}
-
-function test_ok_nothing() {
-    # Regression test: don't segfault on missing command
-    fail invoke_bfs basic -ok \;
-}
-
-function test_ok_stdin() {
-    # -ok should *not* close stdin
-    # See https://savannah.gnu.org/bugs/?24561
-    yes | bfs_diff basic -ok bash -c 'printf "%s? " "$1" && head -n1' bash {} \;
-}
-
-function test_okdir_stdin() {
-    # -okdir should *not* close stdin
-    yes | bfs_diff basic -okdir bash -c 'printf "%s? " "$1" && head -n1' bash {} \;
-}
-
-function test_ok_plus_semicolon() {
-    yes | bfs_diff basic -ok echo {} + \;
-}
-
-function test_okdir_plus_semicolon() {
-    yes | bfs_diff basic -okdir echo {} + \;
-}
-
-function test_delete() {
-    rm -rf scratch/*
-    touchp scratch/foo/bar/baz
-
-    # Don't try to delete '.'
-    (cd scratch && invoke_bfs . -delete)
-
-    bfs_diff scratch
-}
-
-function test_delete_many() {
-    # Test for https://github.com/tavianator/bfs/issues/67
-
-    rm -rf scratch/*
-    mkdir scratch/foo
-    $TOUCH scratch/foo/{1..256}
-
-    invoke_bfs scratch/foo -delete
-    bfs_diff scratch
-}
-
-function test_L_delete() {
-    rm -rf scratch/*
-    mkdir scratch/foo
-    mkdir scratch/bar
-    ln -s ../foo scratch/bar/baz
-
-    # Don't try to rmdir() a symlink
-    invoke_bfs -L scratch/bar -delete || return 1
-
-    bfs_diff scratch
-}
-
-function test_rm() {
-    rm -rf scratch/*
-    touchp scratch/foo/bar/baz
-
-    (cd scratch && invoke_bfs . -rm)
-
-    bfs_diff scratch
-}
-
-function test_regex() {
-    bfs_diff basic -regex 'basic/./.'
-}
-
-function test_iregex() {
-    bfs_diff basic -iregex 'basic/[A-Z]/[a-z]'
-}
-
-function test_regex_parens() {
-    cd weirdnames
-    bfs_diff . -regex '\./\((\)'
-}
-
-function test_regex_error() {
-    fail invoke_bfs basic -regex '['
-}
-
-function test_regex_invalid_utf8() {
-    rm -rf scratch/*
-
-    # Incomplete UTF-8 sequences
-    skip_unless touch scratch/$'\xC3'
-    skip_unless touch scratch/$'\xE2\x84'
-    skip_unless touch scratch/$'\xF0\x9F\x92'
-
-    bfs_diff scratch -regex 'scratch/..'
-}
-
-function test_E() {
-    cd weirdnames
-    bfs_diff -E . -regex '\./(\()'
-}
-
-function test_regextype_posix_basic() {
-    cd weirdnames
-    bfs_diff -regextype posix-basic -regex '\./\((\)'
-}
-
-function test_regextype_posix_extended() {
-    cd weirdnames
-    bfs_diff -regextype posix-extended -regex '\./(\()'
-}
-
-function test_regextype_ed() {
-    cd weirdnames
-    bfs_diff -regextype ed -regex '\./\((\)'
-}
-
-function test_regextype_emacs() {
-    skip_unless invoke_bfs -regextype emacs -quit
-
-    bfs_diff basic -regextype emacs -regex '.*/\(f+o?o?\|bar\)'
-}
-
-function test_regextype_grep() {
-    skip_unless invoke_bfs -regextype grep -quit
-
-    bfs_diff basic -regextype grep -regex '.*/f\+o\?o\?'
-}
-
-function test_regextype_sed() {
-    cd weirdnames
-    bfs_diff -regextype sed -regex '\./\((\)'
-}
-
-function test_d_path() {
-    bfs_diff -d basic
-}
-
-function test_path_d() {
-    bfs_diff basic -d
-}
-
-function test_f() {
-    cd weirdnames
-    bfs_diff -f '-' -f '('
-}
-
-function test_s() {
-    invoke_bfs -s weirdnames -maxdepth 1 >"$TMP/test_s.out"
-
-    if [ "$UPDATE" ]; then
-        cp {"$TMP","$TESTS"}/test_s.out
-    else
-        $DIFF -u {"$TESTS","$TMP"}/test_s.out
-    fi
-}
-
-function test_hidden() {
-    bfs_diff weirdnames -hidden
-}
-
-function test_hidden_root() {
-    cd weirdnames
-    bfs_diff . ./. ... ./... .../.. -hidden
-}
-
-function test_nohidden() {
-    bfs_diff weirdnames -nohidden
-}
-
-function test_nohidden_depth() {
-    bfs_diff weirdnames -depth -nohidden
-}
-
-function test_depth_n() {
-    bfs_diff basic -depth 2
-}
-
-function test_depth_n_plus() {
-    bfs_diff basic -depth +2
-}
-
-function test_depth_n_minus() {
-    bfs_diff basic -depth -2
-}
-
-function test_depth_depth_n() {
-    bfs_diff basic -depth -depth 2
-}
-
-function test_depth_depth_n_plus() {
-    bfs_diff basic -depth -depth +2
-}
-
-function test_depth_depth_n_minus() {
-    bfs_diff basic -depth -depth -2
-}
-
-function test_depth_overflow() {
-    bfs_diff basic -depth -4294967296
-}
-
-function test_gid_name() {
-    bfs_diff basic -gid "$(id -gn)"
-}
-
-function test_uid_name() {
-    bfs_diff basic -uid "$(id -un)"
-}
-
-function test_mnewer() {
-    bfs_diff times -mnewer times/a
-}
-
-function test_H_mnewer() {
-    bfs_diff -H times -mnewer times/l
-}
-
-function test_msince() {
-    bfs_diff times -msince 1991-12-14T00:01
-}
-
-function test_mtime_units() {
-    bfs_diff times -mtime +500w400d300h200m100s
-}
-
-function test_size_T() {
-    bfs_diff basic -type f -size 1T
-}
-
-function test_quit() {
-    bfs_diff basic/g -print -name g -quit
-}
-
-function test_quit_child() {
-    bfs_diff basic/g -print -name h -quit
-}
-
-function test_quit_depth() {
-    bfs_diff basic/g -depth -print -name g -quit
-}
-
-function test_quit_depth_child() {
-    bfs_diff basic/g -depth -print -name h -quit
-}
-
-function test_quit_after_print() {
-    bfs_diff basic basic -print -quit
-}
-
-function test_quit_before_print() {
-    bfs_diff basic basic -quit -print
-}
-
-function test_quit_implicit_print() {
-    bfs_diff basic -name basic -o -quit
-}
-
-function test_inum() {
-    bfs_diff basic -inum "$(inum basic/k/foo/bar)"
-}
-
-function test_nogroup() {
-    bfs_diff basic -nogroup
-}
-
-function test_nogroup_ulimit() {
-    closefrom 4
-    ulimit -n 16
-    bfs_diff deep -nogroup
-}
-
-function test_nouser() {
-    bfs_diff basic -nouser
-}
-
-function test_nouser_ulimit() {
-    closefrom 4
-    ulimit -n 16
-    bfs_diff deep -nouser
-}
-
-function test_ls() {
-    invoke_bfs rainbow -ls >scratch/test_ls.out
-}
-
-function test_L_ls() {
-    invoke_bfs -L rainbow -ls >scratch/test_L_ls.out
-}
-
-function test_fls() {
-    invoke_bfs rainbow -fls scratch/test_fls.out
-}
-
-function test_printf() {
-    bfs_diff basic -printf '%%p(%p) %%d(%d) %%f(%f) %%h(%h) %%H(%H) %%P(%P) %%m(%m) %%M(%M) %%y(%y)\n'
-}
-
-function test_printf_empty() {
-    bfs_diff basic -printf ''
-}
-
-function test_printf_slash() {
-    bfs_diff / -maxdepth 0 -printf '(%h)/(%f)\n'
-}
-
-function test_printf_slashes() {
-    bfs_diff /// -maxdepth 0 -printf '(%h)/(%f)\n'
-}
-
-function test_printf_trailing_slash() {
-    bfs_diff basic/ -printf '(%h)/(%f)\n'
-}
-
-function test_printf_trailing_slashes() {
-    bfs_diff basic/// -printf '(%h)/(%f)\n'
-}
-
-function test_printf_flags() {
-    bfs_diff basic -printf '|%- 10.10p| %+03d %#4m\n'
-}
-
-function test_printf_types() {
-    bfs_diff loops -printf '(%p) (%l) %y %Y\n'
-}
-
-function test_printf_escapes() {
-    bfs_diff basic -maxdepth 0 -printf '\18\118\1118\11118\n\cfoo'
-}
-
-function test_printf_times() {
-    bfs_diff times -type f -printf '%p | %a %AY-%Am-%Ad %AH:%AI:%AS %T@ | %t %TY-%Tm-%Td %TH:%TI:%TS %T@\n'
-}
-
-function test_printf_leak() {
-    # Memory leak regression test
-    bfs_diff basic -maxdepth 0 -printf '%p'
-}
-
-function test_printf_nul() {
-    # NUL byte regression test
-    bfs_diff basic -maxdepth 0 -printf '%h\0%f\n'
-}
-
-function test_printf_w() {
-    # Birth times may not be supported, so just check that %w/%W/%B can be parsed
-    bfs_diff times -false -printf '%w %WY %BY\n'
-}
-
-function test_printf_Y_error() {
-    rm -rf scratch/*
-    mkdir scratch/foo
-    chmod -x scratch/foo
-    ln -s foo/bar scratch/bar
-
-    bfs_diff scratch -printf '(%p) (%l) %y %Y\n'
-    local ret=$?
-
-    chmod +x scratch/foo
-    rm -rf scratch/*
-
-    [ $ret -eq $EX_BFS ]
-}
-
-function test_printf_H() {
-    bfs_diff basic links -printf '%%p(%p) %%d(%d) %%f(%f) %%h(%h) %%H(%H) %%P(%P) %%y(%y)\n'
-}
-
-function test_printf_u_g_ulimit() {
-    closefrom 4
-    ulimit -n 16
-    [ "$(invoke_bfs deep -printf '%u %g\n' | uniq)" = "$(id -un) $(id -gn)" ]
-}
-
-function test_printf_l_nonlink() {
-    bfs_diff links -printf '| %26p -> %-26l |\n'
-}
-
-function test_printf_incomplete_escape() {
-    fail invoke_bfs basic -printf '\'
-}
-
-function test_printf_invalid_escape() {
-    fail invoke_bfs basic -printf '\!'
-}
-
-function test_printf_incomplete_format() {
-    fail invoke_bfs basic -printf '%'
-}
-
-function test_printf_invalid_format() {
-    fail invoke_bfs basic -printf '%!'
-}
-
-function test_printf_duplicate_flag() {
-    fail invoke_bfs basic -printf '%--p'
-}
-
-function test_printf_must_be_numeric() {
-    fail invoke_bfs basic -printf '%+p'
-}
-
-function test_printf_color() {
-    bfs_diff -color -path './rainbow*' -printf '%H %h %f %p %P %l\n'
-}
-
-function test_fprintf() {
-    invoke_bfs basic -fprintf scratch/test_fprintf.out '%%p(%p) %%d(%d) %%f(%f) %%h(%h) %%H(%H) %%P(%P) %%m(%m) %%M(%M) %%y(%y)\n'
-    sort -o scratch/test_fprintf.out scratch/test_fprintf.out
-
-    if [ "$UPDATE" ]; then
-        cp scratch/test_fprintf.out "$TESTS/test_fprintf.out"
-    else
-        $DIFF -u "$TESTS/test_fprintf.out" scratch/test_fprintf.out
-    fi
-}
-
-function test_fprintf_nofile() {
-    fail invoke_bfs basic -fprintf
-}
-
-function test_fprintf_noformat() {
-    fail invoke_bfs basic -fprintf /dev/null
-}
-
-function test_fstype() {
-    fstype=$(invoke_bfs basic -maxdepth 0 -printf '%F\n')
-    bfs_diff basic -fstype "$fstype"
-}
-
-function test_path_flag_expr() {
-    bfs_diff links/skip -H -type l
-}
-
-function test_path_expr_flag() {
-    bfs_diff links/skip -type l -H
-}
-
-function test_flag_expr_path() {
-    bfs_diff -H -type l links/skip
-}
-
-function test_expr_flag_path() {
-    bfs_diff -type l -H links/skip
-}
-
-function test_expr_path_flag() {
-    bfs_diff -type l links/skip -H
-}
-
-function test_parens() {
-    bfs_diff basic \( -name '*f*' \)
-}
-
-function test_bang() {
-    bfs_diff basic \! -name foo
-}
-
-function test_not() {
-    bfs_diff basic -not -name foo
-}
-
-function test_implicit_and() {
-    bfs_diff basic -name foo -type d
-}
-
-function test_a() {
-    bfs_diff basic -name foo -a -type d
-}
-
-function test_and() {
-    bfs_diff basic -name foo -and -type d
-}
-
-function test_o() {
-    bfs_diff basic -name foo -o -type d
-}
-
-function test_or() {
-    bfs_diff basic -name foo -or -type d
-}
-
-function test_comma() {
-    bfs_diff basic -name '*f*' -print , -print
-}
-
-function test_precedence() {
-    bfs_diff basic \( -name foo -type d -o -name bar -a -type f \) -print , \! -empty -type f -print
-}
-
-function test_incomplete() {
-    fail invoke_bfs basic \(
-}
-
-function test_missing_paren() {
-    fail invoke_bfs basic \( -print
-}
-
-function test_extra_paren() {
-    fail invoke_bfs basic -print \)
-}
-
-function test_color() {
-    bfs_diff rainbow -color
-}
-
-function test_color_L() {
-    bfs_diff -L rainbow -color
-}
-
-function test_color_rs_lc_rc_ec() {
-    LS_COLORS="rs=RS:lc=LC:rc=RC:ec=EC:" bfs_diff rainbow -color
-}
-
-function test_color_escapes() {
-    LS_COLORS="lc=\e[:rc=\155\::ec=^[\x5B\x6d:" bfs_diff rainbow -color
-}
-
-function test_color_nul() {
-    LS_COLORS="ec=\33[m\0:" bfs_diff rainbow -color -maxdepth 0
-}
-
-function test_color_ln_target() {
-    LS_COLORS="ln=target:or=01;31:mi=01;33:" bfs_diff rainbow -color
-}
-
-function test_color_L_ln_target() {
-    LS_COLORS="ln=target:or=01;31:mi=01;33:" bfs_diff -L rainbow -color
-}
-
-function test_color_mh() {
-    LS_COLORS="mh=01:" bfs_diff rainbow -color
-}
-
-function test_color_mh0() {
-    LS_COLORS="mh=00:" bfs_diff rainbow -color
-}
-
-function test_color_or() {
-    LS_COLORS="or=01:" bfs_diff rainbow -color
-}
-
-function test_color_mi() {
-    LS_COLORS="mi=01:" bfs_diff rainbow -color
-}
-
-function test_color_or_mi() {
-    LS_COLORS="or=01;31:mi=01;33:" bfs_diff rainbow -color
-}
-
-function test_color_or_mi0() {
-    LS_COLORS="or=01;31:mi=00:" bfs_diff rainbow -color
-}
-
-function test_color_or0_mi() {
-    LS_COLORS="or=00:mi=01;33:" bfs_diff rainbow -color
-}
-
-function test_color_or0_mi0() {
-    LS_COLORS="or=00:mi=00:" bfs_diff rainbow -color
-}
-
-function test_color_su_sg0() {
-    LS_COLORS="su=37;41:sg=00:" bfs_diff rainbow -color
-}
-
-function test_color_su0_sg() {
-    LS_COLORS="su=00:sg=30;43:" bfs_diff rainbow -color
-}
-
-function test_color_su0_sg0() {
-    LS_COLORS="su=00:sg=00:" bfs_diff rainbow -color
-}
-
-function test_color_st_tw_ow0() {
-    LS_COLORS="st=37;44:tw=40;32:ow=00:" bfs_diff rainbow -color
-}
-
-function test_color_st_tw0_ow() {
-    LS_COLORS="st=37;44:tw=00:ow=34;42:" bfs_diff rainbow -color
-}
-
-function test_color_st_tw0_ow0() {
-    LS_COLORS="st=37;44:tw=00:ow=00:" bfs_diff rainbow -color
-}
-
-function test_color_st0_tw_ow() {
-    LS_COLORS="st=00:tw=40;32:ow=34;42:" bfs_diff rainbow -color
-}
-
-function test_color_st0_tw_ow0() {
-    LS_COLORS="st=00:tw=40;32:ow=00:" bfs_diff rainbow -color
-}
-
-function test_color_st0_tw0_ow() {
-    LS_COLORS="st=00:tw=00:ow=34;42:" bfs_diff rainbow -color
-}
-
-function test_color_st0_tw0_ow0() {
-    LS_COLORS="st=00:tw=00:ow=00:" bfs_diff rainbow -color
-}
-
-function test_color_ext() {
-    LS_COLORS="*.txt=01:" bfs_diff rainbow -color
-}
-
-function test_color_ext0() {
-    LS_COLORS="*.txt=00:" bfs_diff rainbow -color
-}
-
-function test_color_ext_override() {
-    LS_COLORS="*.tar.gz=01;31:*.TAR=01;32:*.gz=01;33:" bfs_diff rainbow -color
-}
-
-function test_color_ext_underride() {
-    LS_COLORS="*.gz=01;33:*.TAR=01;32:*.tar.gz=01;31:" bfs_diff rainbow -color
-}
-
-function test_color_missing_colon() {
-    LS_COLORS="*.txt=01" bfs_diff rainbow -color
-}
-
-function test_color_no_stat() {
-    LS_COLORS="mh=0:ex=0:sg=0:su=0:st=0:ow=0:tw=0:*.txt=01:" bfs_diff rainbow -color
-}
-
-function test_color_L_no_stat() {
-    LS_COLORS="mh=0:ex=0:sg=0:su=0:st=0:ow=0:tw=0:*.txt=01:" bfs_diff -L rainbow -color
-}
-
-function test_color_star() {
-    # Regression test: don't segfault on LS_COLORS="*"
-    LS_COLORS="*" bfs_diff rainbow -color
-}
-
-function test_color_ls() {
-    rm -rf scratch/*
-    touchp scratch/foo/bar/baz
-    ln -s foo/bar/baz scratch/link
-    ln -s foo/bar/nowhere scratch/broken
-    ln -s foo/bar/nowhere/nothing scratch/nested
-    ln -s foo/bar/baz/qux scratch/notdir
-    ln -s scratch/foo/bar scratch/relative
-    mkdir scratch/__bfs__
-    ln -s /__bfs__/nowhere scratch/absolute
-
-    local EXPECTED="$TESTS/${FUNCNAME[0]}.out"
-    if [ "$UPDATE" ]; then
-        local ACTUAL="$EXPECTED"
-    else
-        local ACTUAL="$TMP/${FUNCNAME[0]}.out"
-    fi
-
-    LS_COLORS="or=01;31:" invoke_bfs scratch/{,link,broken,nested,notdir,relative,absolute} -color -type l -ls \
-        | sed 's/.* -> //' \
-        | sort -o "$ACTUAL"
-
-    if [ ! "$UPDATE" ]; then
-        $DIFF -u "$EXPECTED" "$ACTUAL"
-    fi
-}
-
-function test_deep() {
-    closefrom 4
-
-    ulimit -n 16
-    bfs_diff deep -type f -exec bash -c 'echo "${1:0:6}/.../${1##*/} (${#1})"' bash {} \;
-}
-
-function test_deep_strict() {
-    closefrom 4
-
-    # Not even enough fds to keep the root open
-    ulimit -n 7
-    bfs_diff deep -type f -exec bash -c 'echo "${1:0:6}/.../${1##*/} (${#1})"' bash {} \;
-}
-
-function test_exit() {
-    invoke_bfs basic -name foo -exit 42
-    if [ $? -ne 42 ]; then
-        return 1
-    fi
-
-    invoke_bfs basic -name qux -exit 42
-    if [ $? -ne 0 ]; then
-        return 1
-    fi
-
-    bfs_diff basic/g -print -name g -exit
-}
-
-function test_exit_no_implicit_print() {
-    bfs_diff basic -not -name foo -o -exit
-}
-
-function test_printx() {
-    bfs_diff weirdnames -printx
-}
-
-function test_and_purity() {
-    # Regression test: (-a lhs(pure) rhs(always_false)) <==> rhs is only valid if rhs is pure
-    bfs_diff basic -name nonexistent \( -print , -false \)
-}
-
-function test_or_purity() {
-    # Regression test: (-o lhs(pure) rhs(always_true)) <==> rhs is only valid if rhs is pure
-    bfs_diff basic -name '*' -o -print
-}
-
-function test_double_negation() {
-    bfs_diff basic \! \! -name 'foo'
-}
-
-function test_not_reachability() {
-    bfs_diff basic -print \! -quit -print
-}
-
-function test_comma_reachability() {
-    bfs_diff basic -print -quit , -print
-}
-
-function test_de_morgan_not() {
-    bfs_diff basic \! \( -name 'foo' -o \! -type f \)
-}
-
-function test_de_morgan_and() {
-    bfs_diff basic \( \! -name 'foo' -a \! -type f \)
-}
-
-function test_de_morgan_or() {
-    bfs_diff basic \( \! -name 'foo' -o \! -type f \)
-}
-
-function test_and_false_or_true() {
-    # Test (-a lhs(always_true) -false) <==> (! lhs),
-    # (-o lhs(always_false) -true) <==> (! lhs)
-    bfs_diff basic -prune -false -o -true
-}
-
-function test_comma_redundant_true() {
-    # Test (, lhs(always_true) -true) <==> lhs
-    bfs_diff basic -prune , -true
-}
-
-function test_comma_redundant_false() {
-    # Test (, lhs(always_false) -false) <==> lhs
-    bfs_diff basic -print -not -prune , -false
-}
-
-function test_data_flow_depth() {
-    bfs_diff basic -depth +1 -depth -4
-}
-
-function test_data_flow_group() {
-    bfs_diff basic \( -group "$(id -g)" -nogroup \) -o \( -group "$(id -g)" -o -nogroup \)
-}
-
-function test_data_flow_user() {
-    bfs_diff basic \( -user "$(id -u)" -nouser \) -o \( -user "$(id -u)" -o -nouser \)
-}
-
-function test_data_flow_hidden() {
-    bfs_diff basic \( -hidden -not -hidden \) -o \( -hidden -o -not -hidden \)
-}
-
-function test_data_flow_sparse() {
-    bfs_diff basic \( -sparse -not -sparse \) -o \( -sparse -o -not -sparse \)
-}
-
-function test_data_flow_type() {
-    bfs_diff basic \! \( -type f -o \! -type f \)
-}
-
-function test_data_flow_and_swap() {
-    bfs_diff basic \! -type f -a -type d
-}
-
-function test_data_flow_or_swap() {
-    bfs_diff basic \! \( -type f -o \! -type d \)
-}
-
-function test_print_error() {
-    skip_unless test -e /dev/full
-    fail invoke_bfs basic -maxdepth 0 >/dev/full
-}
-
-function test_fprint_error() {
-    skip_unless test -e /dev/full
-    fail invoke_bfs basic -maxdepth 0 -fprint /dev/full
-}
-
-function test_fprint_noerror() {
-    # Regression test: /dev/full should not fail until actually written to
-    skip_unless test -e /dev/full
-    invoke_bfs basic -false -fprint /dev/full
-}
-
-function test_fprint_error_stdout() {
-    skip_unless test -e /dev/full
-    fail invoke_bfs basic -maxdepth 0 -fprint /dev/full >/dev/full
-}
-
-function test_fprint_error_stderr() {
-    skip_unless test -e /dev/full
-    fail invoke_bfs basic -maxdepth 0 -fprint /dev/full 2>/dev/full
-}
-
-function test_print0() {
-    bfs_diff basic/a basic/b -print0
-}
-
-function test_fprint0() {
-    invoke_bfs basic/a basic/b -fprint0 scratch/test_fprint0.out
-
-    if [ "$UPDATE" ]; then
-        cp scratch/test_fprint0.out "$TESTS/test_fprint0.out"
-    else
-        cmp -s scratch/test_fprint0.out "$TESTS/test_fprint0.out"
-    fi
-}
-
-function test_closed_stdin() {
-    bfs_diff basic <&-
-}
-
-function test_ok_closed_stdin() {
-    bfs_diff basic -ok echo \; <&-
-}
-
-function test_okdir_closed_stdin() {
-    bfs_diff basic -okdir echo {} \; <&-
-}
-
-function test_closed_stdout() {
-    fail invoke_bfs basic >&-
-}
-
-function test_closed_stderr() {
-    fail invoke_bfs basic >&- 2>&-
-}
-
-function test_unique() {
-    bfs_diff links/{file,symlink,hardlink} -unique
-}
-
-function test_unique_depth() {
-    bfs_diff basic -unique -depth
-}
-
-function test_L_unique() {
-    bfs_diff -L links/{file,symlink,hardlink} -unique
-}
-
-function test_L_unique_loops() {
-    bfs_diff -L loops/deeply/nested -unique
-}
-
-function test_L_unique_depth() {
-    bfs_diff -L loops/deeply/nested -unique -depth
-}
-
-function test_mount() {
-    skip_unless test "$SUDO"
-    skip_if test "$UNAME" = "Darwin"
-
-    rm -rf scratch/*
-    mkdir scratch/{foo,mnt}
-    sudo mount -t tmpfs tmpfs scratch/mnt
-    $TOUCH scratch/foo/bar scratch/mnt/baz
-
-    bfs_diff scratch -mount
-    local ret=$?
-
-    sudo umount scratch/mnt
-    return $ret
-}
-
-function test_L_mount() {
-    skip_unless test "$SUDO"
-    skip_if test "$UNAME" = "Darwin"
-
-    rm -rf scratch/*
-    mkdir scratch/{foo,mnt}
-    sudo mount -t tmpfs tmpfs scratch/mnt
-    ln -s ../mnt scratch/foo/bar
-    $TOUCH scratch/mnt/baz
-    ln -s ../mnt/baz scratch/foo/qux
-
-    bfs_diff -L scratch -mount
-    local ret=$?
-
-    sudo umount scratch/mnt
-    return $ret
-}
-
-function test_xdev() {
-    skip_unless test "$SUDO"
-    skip_if test "$UNAME" = "Darwin"
-
-    rm -rf scratch/*
-    mkdir scratch/{foo,mnt}
-    sudo mount -t tmpfs tmpfs scratch/mnt
-    $TOUCH scratch/foo/bar scratch/mnt/baz
-
-    bfs_diff scratch -xdev
-    local ret=$?
-
-    sudo umount scratch/mnt
-    return $ret
-}
-
-function test_L_xdev() {
-    skip_unless test "$SUDO"
-    skip_if test "$UNAME" = "Darwin"
-
-    rm -rf scratch/*
-    mkdir scratch/{foo,mnt}
-    sudo mount -t tmpfs tmpfs scratch/mnt
-    ln -s ../mnt scratch/foo/bar
-    $TOUCH scratch/mnt/baz
-    ln -s ../mnt/baz scratch/foo/qux
-
-    bfs_diff -L scratch -xdev
-    local ret=$?
-
-    sudo umount scratch/mnt
-    return $ret
-}
-
-function test_inum_mount() {
-    skip_unless test "$SUDO"
-    skip_if test "$UNAME" = "Darwin"
-
-    rm -rf scratch/*
-    mkdir scratch/{foo,mnt}
-    sudo mount -t tmpfs tmpfs scratch/mnt
-
-    bfs_diff scratch -inum "$(inum scratch/mnt)"
-    local ret=$?
-
-    sudo umount scratch/mnt
-    return $ret
-}
-
-function test_inum_bind_mount() {
-    skip_unless test "$SUDO"
-    skip_unless test "$UNAME" = "Linux"
-
-    rm -rf scratch/*
-    $TOUCH scratch/{foo,bar}
-    sudo mount --bind scratch/{foo,bar}
-
-    bfs_diff scratch -inum "$(inum scratch/bar)"
-    local ret=$?
-
-    sudo umount scratch/bar
-    return $ret
-}
-
-function test_type_bind_mount() {
-    skip_unless test "$SUDO"
-    skip_unless test "$UNAME" = "Linux"
-
-    rm -rf scratch/*
-    $TOUCH scratch/{file,null}
-    sudo mount --bind /dev/null scratch/null
-
-    bfs_diff scratch -type c
-    local ret=$?
-
-    sudo umount scratch/null
-    return $ret
-}
-
-function test_xtype_bind_mount() {
-    skip_unless test "$SUDO"
-    skip_unless test "$UNAME" = "Linux"
-
-    rm -rf scratch/*
-    $TOUCH scratch/{file,null}
-    sudo mount --bind /dev/null scratch/null
-    ln -s /dev/null scratch/link
-
-    bfs_diff -L scratch -type c
-    local ret=$?
-
-    sudo umount scratch/null
-    return $ret
-}
-
-function test_inum_automount() {
-    # bfs shouldn't trigger automounts unless it descends into them
-
-    skip_unless test "$SUDO"
-    skip_unless command -v systemd-mount &>/dev/null
-
-    rm -rf scratch/*
-    mkdir scratch/{foo,mnt}
-    skip_unless sudo systemd-mount -A -o bind basic scratch/mnt
-
-    local before=$(inum scratch/mnt)
-    bfs_diff scratch -inum "$before" -prune
-    local ret=$?
-    local after=$(inum scratch/mnt)
-
-    sudo systemd-umount scratch/mnt
-
-    ((ret == 0 && before == after))
-}
-
-function set_acl() {
-    case "$UNAME" in
-        Darwin)
-            chmod +a "$(id -un) allow read,write" "$1"
-            ;;
-        FreeBSD)
-            if [ "$(getconf ACL_NFS4 "$1")" -gt 0 ]; then
-                setfacl -m "u:$(id -un):rw::allow" "$1"
-            else
-                setfacl -m "u:$(id -un):rw" "$1"
-            fi
-            ;;
-        *)
-            setfacl -m "u:$(id -un):rw" "$1"
-            ;;
-    esac
-}
-
-function test_acl() {
-    rm -rf scratch/*
-
-    skip_unless invoke_bfs scratch -quit -acl
-
-    $TOUCH scratch/{normal,acl}
-    skip_unless set_acl scratch/acl
-    ln -s acl scratch/link
-
-    bfs_diff scratch -acl
-}
-
-function test_L_acl() {
-    rm -rf scratch/*
-
-    skip_unless invoke_bfs scratch -quit -acl
-
-    $TOUCH scratch/{normal,acl}
-    skip_unless set_acl scratch/acl
-    ln -s acl scratch/link
-
-    bfs_diff -L scratch -acl
-}
-
-function test_capable() {
-    skip_unless test "$SUDO"
-    skip_unless test "$UNAME" = "Linux"
-
-    rm -rf scratch/*
-
-    skip_unless invoke_bfs scratch -quit -capable
-
-    $TOUCH scratch/{normal,capable}
-    sudo setcap all+ep scratch/capable
-    ln -s capable scratch/link
-
-    bfs_diff scratch -capable
-}
-
-function test_L_capable() {
-    skip_unless test "$SUDO"
-    skip_unless test "$UNAME" = "Linux"
-
-    rm -rf scratch/*
-
-    skip_unless invoke_bfs scratch -quit -capable
-
-    $TOUCH scratch/{normal,capable}
-    sudo setcap all+ep scratch/capable
-    ln -s capable scratch/link
-
-    bfs_diff -L scratch -capable
-}
-
-function make_xattrs() {
-    rm -rf scratch/*
-
-    $TOUCH scratch/{normal,xattr,xattr_2}
-    ln -s xattr scratch/link
-    ln -s normal scratch/xattr_link
-
-    case "$UNAME" in
-        Darwin)
-            xattr -w bfs_test true scratch/xattr \
-                && xattr -w bfs_test_2 true scratch/xattr_2 \
-                && xattr -s -w bfs_test true scratch/xattr_link
-            ;;
-        FreeBSD)
-            setextattr user bfs_test true scratch/xattr \
-                && setextattr user bfs_test_2 true scratch/xattr_2 \
-                && setextattr -h user bfs_test true scratch/xattr_link
-            ;;
-        *)
-            # Linux tmpfs doesn't support the user.* namespace, so we use the security.*
-            # namespace, which is writable by root and readable by others
-            [ "$SUDO" ] \
-                && sudo setfattr -n security.bfs_test scratch/xattr \
-                && sudo setfattr -n security.bfs_test_2 scratch/xattr_2 \
-                && sudo setfattr -h -n security.bfs_test scratch/xattr_link
-            ;;
-    esac
-}
-
-function test_xattr() {
-    skip_unless invoke_bfs scratch -quit -xattr
-    skip_unless make_xattrs
-    bfs_diff scratch -xattr
-}
-
-function test_L_xattr() {
-    skip_unless invoke_bfs scratch -quit -xattr
-    skip_unless make_xattrs
-    bfs_diff -L scratch -xattr
-}
-
-function test_xattrname() {
-    skip_unless invoke_bfs scratch -quit -xattr
-    skip_unless make_xattrs
-
-    case "$UNAME" in
-        Darwin|FreeBSD)
-            bfs_diff scratch -xattrname bfs_test
-            ;;
-        *)
-            bfs_diff scratch -xattrname security.bfs_test
-            ;;
-    esac
-}
-
-function test_L_xattrname() {
-    skip_unless invoke_bfs scratch -quit -xattr
-    skip_unless make_xattrs
-
-    case "$UNAME" in
-        Darwin|FreeBSD)
-            bfs_diff -L scratch -xattrname bfs_test
-            ;;
-        *)
-            bfs_diff -L scratch -xattrname security.bfs_test
-            ;;
-    esac
-}
-
-function test_help() {
-    invoke_bfs -help | grep -E '\{...?\}' && return 1
-    invoke_bfs -D help | grep -E '\{...?\}' && return 1
-    invoke_bfs -S help | grep -E '\{...?\}' && return 1
-    invoke_bfs -regextype help | grep -E '\{...?\}' && return 1
-
-    return 0
-}
-
-function test_version() {
-    invoke_bfs -version >/dev/null
-}
-
-function test_typo() {
-    invoke_bfs -dikkiq 2>&1 | grep follow >/dev/null
-}
-
-function test_D_multi() {
-    bfs_diff -D opt,tree,unknown basic
-}
-
-function test_D_all() {
-    bfs_diff -D all basic
-}
-
-function test_O0() {
-    bfs_diff -O0 basic -not \( -type f -not -type f \)
-}
-
-function test_O1() {
-    bfs_diff -O1 basic -not \( -type f -not -type f \)
-}
-
-function test_O2() {
-    bfs_diff -O2 basic -not \( -type f -not -type f \)
-}
-
-function test_O3() {
-    bfs_diff -O3 basic -not \( -type f -not -type f \)
-}
-
-function test_Ofast() {
-    bfs_diff -Ofast basic -not \( -xtype f -not -xtype f \)
-}
-
-function test_S() {
-    invoke_bfs -S "$1" -s basic >"scratch/test_S_$1.out"
-
-    if [ "$UPDATE" ]; then
-        cp {scratch,"$TESTS"}/"test_S_$1.out"
-    else
-        $DIFF -u {"$TESTS",scratch}/"test_S_$1.out"
-    fi
-}
-
-function test_S_bfs() {
-    test_S bfs
-}
-
-function test_S_dfs() {
-    test_S dfs
-}
-
-function test_S_ids() {
-    test_S ids
-}
-
-function test_exclude_name() {
-    bfs_diff basic -exclude -name foo
-}
-
-function test_exclude_depth() {
-    bfs_diff basic -depth -exclude -name foo
-}
-
-function test_exclude_mindepth() {
-    bfs_diff basic -mindepth 3 -exclude -name foo
-}
-
-function test_exclude_print() {
-    fail invoke_bfs basic -exclude -print
-}
-
-function test_exclude_exclude() {
-    fail invoke_bfs basic -exclude -exclude -name foo
-}
-
-function test_flags() {
-    skip_unless invoke_bfs scratch -quit -flags offline
-
-    rm -rf scratch/*
-
-    $TOUCH scratch/{foo,bar}
-    skip_unless chflags offline scratch/bar
-
-    bfs_diff scratch -flags -offline,nohidden
-}
-
-function test_files0_from_file() {
-    cd weirdnames
-    invoke_bfs -mindepth 1 -fprintf ../scratch/files0.in "%P\0"
-    bfs_diff -files0-from ../scratch/files0.in
-}
-
-function test_files0_from_stdin() {
-    cd weirdnames
-    invoke_bfs -mindepth 1 -printf "%P\0" | bfs_diff -files0-from -
-}
-
-function test_files0_from_none() {
-    printf "" | fail invoke_bfs -files0-from -
-}
-
-function test_files0_from_empty() {
-    printf "\0" | fail invoke_bfs -files0-from -
-}
-
-function test_files0_from_nowhere() {
-    fail invoke_bfs -files0-from
-}
-
-function test_files0_from_nothing() {
-    fail invoke_bfs -files0-from basic/nonexistent
-}
-
-function test_files0_from_ok() {
-    printf "basic\0" | fail invoke_bfs -files0-from - -ok echo {} \;
-}
-
-function test_stderr_fails_silently() {
-    skip_unless test -e /dev/full
-    bfs_diff -D all basic 2>/dev/full
-}
-
-function test_stderr_fails_loudly() {
-    skip_unless test -e /dev/full
-    fail invoke_bfs -D all basic -false -fprint /dev/full 2>/dev/full
-}
-
-function test_unexpected_operator() {
-    fail invoke_bfs \! -o -print
-}
-
-BOL=
-EOL='\n'
-
-function update_eol() {
-    # Put the cursor at the last column, then write a space so the next
-    # character will wrap
-    EOL="\\033[${COLUMNS}G "
-}
-
-if [[ -t 1 && ! "$VERBOSE_TESTS" ]]; then
-    BOL='\r\033[K'
-
-    # Workaround for bash 4: checkwinsize is off by default.  We can turn it on,
-    # but we also have to explicitly trigger a foreground job to finish so that
-    # it will update the window size before we use $COLUMNS
-    shopt -s checkwinsize
-    (:)
-
-    update_eol
-    trap update_eol WINCH
-fi
-
-passed=0
-failed=0
-skipped=0
-
-for test in "${enabled_tests[@]}"; do
-    printf "${BOL}${YLW}%s${RST}${EOL}" "$test"
-
-    if [ "$VERBOSE_ERRORS" ]; then
-        ("$test")
-    else
-        ("$test") 2>"$TMP/stderr"
-    fi
-    status=$?
-
-    if ((status == 0)); then
-        ((++passed))
-    elif ((status == EX_SKIP)); then
-        ((++skipped))
-        if [ "$VERBOSE_SKIPPED" ]; then
-            printf "${BOL}${CYN}%s skipped!${RST}\n" "$test"
-        fi
-    else
-        ((++failed))
-        [ "$VERBOSE_ERRORS" ] || cat "$TMP/stderr" >&2
-        printf "${BOL}${RED}%s failed!${RST}\n" "$test"
-        [ "$STOP" ] && break
-    fi
-done
-
-if ((passed > 0)); then
-    printf "${BOL}${GRN}tests passed: %d${RST}\n" "$passed"
-fi
-if ((skipped > 0)); then
-    printf "${BOL}${CYN}tests skipped: %s${RST}\n" "$skipped"
-fi
-if ((failed > 0)); then
-    printf "${BOL}${RED}tests failed: %s${RST}\n" "$failed"
-    exit 1
-fi