Re: [PATCH/RFC v3 6/8] Add case insensitivity support when using git ls-files

From: Joshua Jensen <redacted>

When mydir/filea.txt is added, mydir/ is renamed to MyDir/, and
MyDir/fileb.txt is added, running git ls-files mydir only shows
mydir/filea.txt. Running git ls-files MyDir shows MyDir/fileb.txt.
Running git ls-files mYdIR shows nothing.

With this patch running git ls-files for mydir, MyDir, and mYdIR shows
mydir/filea.txt and MyDir/fileb.txt.

Wildcards are not handled case insensitively in this patch. Example:
MyDir/aBc/file.txt is added. git ls-files MyDir/a* works fine, but git
ls-files mydir/a* does not.

Signed-off-by: Joshua Jensen <redacted>
Signed-off-by: Johannes Sixt <redacted>
Signed-off-by: Junio C Hamano <redacted>
---
 dir.c |   38 ++++++++++++++++++++++++++------------
 1 files changed, 26 insertions(+), 12 deletions(-)

diff --git a/dir.c b/dir.c
index cf8f65c..53aa4f3 100644
--- a/dir.c
+++ b/dir.c

@@ -107,16 +107,30 @@ static int match_one(const char *match, const char

*name, int namelen) if (!*match)
 		return MATCHED_RECURSIVELY;

-	for (;;) {
-		unsigned char c1 = *match;
-		unsigned char c2 = *name;
-		if (c1 == '\0' || is_glob_special(c1))
-			break;
-		if (c1 != c2)
-			return 0;
-		match++;
-		name++;
-		namelen--;
+	if (ignore_case) {
+		for (;;) {
+			unsigned char c1 = tolower(*match);
+			unsigned char c2 = tolower(*name);