merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 9 insertions, 11 deletions

diff --git a/third_party/git/builtin/branch.c b/third_party/git/builtin/branch.c
index 2ef214632f02..efb30b882069 100644
--- a/third_party/git/builtin/branch.c
+++ b/third_party/git/builtin/branch.c
@@ -26,7 +26,7 @@
 #include "commit-reach.h"
 
 static const char * const builtin_branch_usage[] = {
-	N_("git branch [<options>] [-r | -a] [--merged | --no-merged]"),
+	N_("git branch [<options>] [-r | -a] [--merged] [--no-merged]"),
 	N_("git branch [<options>] [-l] [-f] <branch-name> [<start-point>]"),
 	N_("git branch [<options>] [-r] (-d | -D) <branch-name>..."),
 	N_("git branch [<options>] (-m | -M) [<old-branch>] <new-branch>"),
@@ -468,7 +468,7 @@ static void print_current_branch_name(void)
 
 static void reject_rebase_or_bisect_branch(const char *target)
 {
-	struct worktree **worktrees = get_worktrees(0);
+	struct worktree **worktrees = get_worktrees();
 	int i;
 
 	for (i = 0; worktrees[i]; i++) {
@@ -624,7 +624,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		OPT_SET_INT_F(0, "set-upstream", &track, N_("do not use"),
 			BRANCH_TRACK_OVERRIDE, PARSE_OPT_HIDDEN),
 		OPT_STRING('u', "set-upstream-to", &new_upstream, N_("upstream"), N_("change the upstream info")),
-		OPT_BOOL(0, "unset-upstream", &unset_upstream, N_("Unset the upstream info")),
+		OPT_BOOL(0, "unset-upstream", &unset_upstream, N_("unset the upstream info")),
 		OPT__COLOR(&branch_use_color, N_("use colored output")),
 		OPT_SET_INT('r', "remotes",     &filter.kind, N_("act on remote-tracking branches"),
 			FILTER_REFS_REMOTES),
@@ -653,10 +653,8 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		OPT_NO_MERGED(&filter, N_("print only branches that are not merged")),
 		OPT_COLUMN(0, "column", &colopts, N_("list branches in columns")),
 		OPT_REF_SORT(sorting_tail),
-		{
-			OPTION_CALLBACK, 0, "points-at", &filter.points_at, N_("object"),
-			N_("print only branches of the object"), 0, parse_opt_object_name
-		},
+		OPT_CALLBACK(0, "points-at", &filter.points_at, N_("object"),
+			N_("print only branches of the object"), parse_opt_object_name),
 		OPT_BOOL('i', "ignore-case", &icase, N_("sorting and filtering are case insensitive")),
 		OPT_STRING(  0 , "format", &format.format, N_("format"), N_("format to use for the output")),
 		OPT_END(),
@@ -690,12 +688,12 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 	    !show_current && !unset_upstream && argc == 0)
 		list = 1;
 
-	if (filter.with_commit || filter.merge != REF_FILTER_MERGED_NONE || filter.points_at.nr ||
-	    filter.no_commit)
+	if (filter.with_commit || filter.no_commit ||
+	    filter.reachable_from || filter.unreachable_from || filter.points_at.nr)
 		list = 1;
 
 	if (!!delete + !!rename + !!copy + !!new_upstream + !!show_current +
-	    list + unset_upstream > 1)
+	    list + edit_description + unset_upstream > 1)
 		usage_with_options(builtin_branch_usage, options);
 
 	if (filter.abbrev == -1)
@@ -739,7 +737,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		 */
 		if (!sorting)
 			sorting = ref_default_sorting();
-		sorting->ignore_case = icase;
+		ref_sorting_icase_all(sorting, icase);
 		print_ref_list(&filter, sorting, &format);
 		print_columns(&output, colopts, NULL);
 		string_list_clear(&output, 0);