Merge branch 'maint'

* maint:
  grep: fix word-regexp colouring
  completion: use git rev-parse to detect bare repos
  Cope better with a _lot_ of packs
  for-each-ref: fix segfault in copy_email

Author: gitster

builtin-for-each-ref.c

@@ -339,8 +339,11 @@ static const char *copy_name(const char *buf)
 static const char *copy_email(const char *buf)
 {
 	const char *email = strchr(buf, '<');
-	const char *eoemail = strchr(email, '>');
-	if (!email || !eoemail)
+	const char *eoemail;
+	if (!email)
+		return "";
+	eoemail = strchr(email, '>');
+	if (!eoemail)
 		return "";
 	return xmemdupz(email, eoemail + 1 - email);
 }

contrib/completion/git-completion.bash

@@ -132,7 +132,7 @@ __git_ps1 ()
 		local c
 
 		if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
-			if [ "true" = "$(git config --bool core.bare 2>/dev/null)" ]; then
+			if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then
 				c="BARE:"
 			else
 				b="GIT_DIR!"

grep.c

@@ -305,6 +305,7 @@ static int match_one_pattern(struct grep_pat *p, char *bol, char *eol,
 {
 	int hit = 0;
 	int saved_ch = 0;
+	const char *start = bol;
 
 	if ((p->token != GREP_PATTERN) &&
 	    ((p->token == GREP_PATTERN_HEAD) != (ctx == GREP_CONTEXT_HEAD)))
@@ -365,6 +366,10 @@ static int match_one_pattern(struct grep_pat *p, char *bol, char *eol,
 	}
 	if (p->token == GREP_PATTERN_HEAD && saved_ch)
 		*eol = saved_ch;
+	if (hit) {
+		pmatch[0].rm_so += bol - start;
+		pmatch[0].rm_eo += bol - start;
+	}
 	return hit;
 }
 

sha1_file.c

@@ -720,6 +720,8 @@ static int open_packed_git_1(struct packed_git *p)
 		return error("packfile %s index unavailable", p->pack_name);
 
 	p->pack_fd = open(p->pack_name, O_RDONLY);
+	while (p->pack_fd < 0 && errno == EMFILE && unuse_one_window(p, -1))
+		p->pack_fd = open(p->pack_name, O_RDONLY);
 	if (p->pack_fd < 0 || fstat(p->pack_fd, &st))
 		return -1;
 
@@ -937,6 +939,8 @@ static void prepare_packed_git_one(char *objdir, int local)
 	sprintf(path, "%s/pack", objdir);
 	len = strlen(path);
 	dir = opendir(path);
+	while (!dir && errno == EMFILE && unuse_one_window(packed_git, -1))
+		dir = opendir(path);
 	if (!dir) {
 		if (errno != ENOENT)
 			error("unable to open object pack directory: %s: %s",
@@ -2339,6 +2343,8 @@ static int write_loose_object(const unsigned char *sha1, char *hdr, int hdrlen,
 
 	filename = sha1_file_name(sha1);
 	fd = create_tmpfile(tmpfile, sizeof(tmpfile), filename);
+	while (fd < 0 && errno == EMFILE && unuse_one_window(packed_git, -1))
+		fd = create_tmpfile(tmpfile, sizeof(tmpfile), filename);
 	if (fd < 0) {
 		if (errno == EACCES)
 			return error("insufficient permission for adding an object to repository database %s\n", get_object_directory());