tag, branch, for-each-ref: add --ignore-case for sorting and filtering

This options makes sorting ignore case, which is great when you have
branches named bug-12-do-something, Bug-12-do-some-more and
BUG-12-do-what and want to group them together. Sorting externally may
not be an option because we lose coloring and column layout from
git-branch and git-tag.

The same could be said for filtering, but it's probably less important
because you can always go with the ugly pattern [bB][uU][gG]-* if you're
desperate.

You can't have case-sensitive filtering and case-insensitive sorting (or
the other way around) with this though. For branch and tag, that should
be no problem. for-each-ref, as a plumbing, might want finer control.
But we can always add --{filter,sort}-ignore-case when there is a need
for it.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 4e9f6c2..df41fa0 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -18,7 +18,7 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 	int i;
 	const char *format = "%(objectname) %(objecttype)\t%(refname)";
 	struct ref_sorting *sorting = NULL, **sorting_tail = &sorting;
-	int maxcount = 0, quote_style = 0;
+	int maxcount = 0, quote_style = 0, icase = 0;
 	struct ref_array array;
 	struct ref_filter filter;
 
@@ -43,6 +43,7 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 		OPT_MERGED(&filter, N_("print only refs that are merged")),
 		OPT_NO_MERGED(&filter, N_("print only refs that are not merged")),
 		OPT_CONTAINS(&filter.with_commit, N_("print only refs which contain the commit")),
+		OPT_BOOL(0, "ignore-case", &icase, N_("sorting and filtering are case insensitive")),
 		OPT_END(),
 	};
 
@@ -63,6 +64,8 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 
 	if (!sorting)
 		sorting = ref_default_sorting();
+	sorting->ignore_case = icase;
+	filter.ignore_case = icase;
 
 	/* for warn_ambiguous_refs */
 	git_config(git_default_config, NULL);