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

> From: Joshua Jensen <jjensen@workspacewhiz.com>
> 
> 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 <jjensen@workspacewhiz.com>
> Signed-off-by: Johannes Sixt <j6t@kdbg.org>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
> ---
>  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);