Implement -exclude, a special form for convenient exclusions

Fixes #8.

1 files changed, 3 insertions, 1 deletions

diff --git a/cmdline.h b/cmdline.h
index 29da3fa..309dfa3 100644
--- a/cmdline.h
+++ b/cmdline.h
@@ -100,7 +100,9 @@ struct cmdline {
 	/** Whether to only handle paths with xargs-safe characters (-X). */
 	bool xargs_safe;
 
-	/** The command line expression. */
+	/** An expression for files to filter out. */
+	struct expr *exclude;
+	/** The main command line expression. */
 	struct expr *expr;
 
 	/** All the open files owned by the command line. */