Re: [Bug report] git status doesn't escape paths of untracked files

[Junio C Hamano <gitster@pobox.com>]

Junio C Hamano <gitster@pobox.com> writes:

> I agree with your "the special case handling needs to be taught to
> the wt_shortstatus_other()"; a refactored helper function called
> by both places would help.

I came up with this.

 - I very much like the fact that I got rid of the "directly print
   dq and then feed the remainder of (un)quoted path plus trailing
   dq to the normal printing logic" from print_cquoted(), even
   though strbuf_insertstr() a single byte to the beginning of the
   buffer feels a bit wasteful.

 - I think the short status output for unmerged paths deserve the
   same quoting treatment, so an extra helper function pays off even
   better than our plan to fix "untracked/ignored".

 - I am undecided if I like that the helper formats and also prints;
   I was hoping I can come up with a pure formatting helper that
   does not do I/O but it seems to be hard to arrange for the
   current callers.

It seems to pass your tests, but I am not sure how good our test
coverage is around this area.

I see some mixed use of stdout and s->fp in the vicinity together
with "fprintf(stdout, ...)". We may want to clean them up someday,
by the way.

 wt-status.c | 56 ++++++++++++++++++++++----------------------------------
 1 file changed, 22 insertions(+), 34 deletions(-)

diff --git c/wt-status.c w/wt-status.c
index bb0f9120de..ff43932402 100644
--- c/wt-status.c
+++ w/wt-status.c
@@ -1829,6 +1829,21 @@ static void wt_longstatus_print(struct wt_status *s)
 		wt_longstatus_print_stash_summary(s);
 }
 
+static void print_cquoted(const char *fmt, const char *path, const char *prefix)
+{
+	struct strbuf onebuf = STRBUF_INIT;
+	const char *one;
+
+	one = quote_path(path, prefix, &onebuf);
+	if (*one != '"' && strchr(one, ' ')) {
+		strbuf_insertstr(&onebuf, 0, "\"");
+		strbuf_addch(&onebuf, '"');
+		one = onebuf.buf;
+	}
+	printf(fmt, one);
+	strbuf_release(&onebuf);
+}
+
 static void wt_shortstatus_unmerged(struct string_list_item *it,
 			   struct wt_status *s)
 {
@@ -1845,15 +1860,10 @@ static void wt_shortstatus_unmerged(struct string_list_item *it,
 	case 7: how = "UU"; break; /* both modified */
 	}
 	color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
-	if (s->null_termination) {
+	if (s->null_termination)
 		fprintf(stdout, " %s%c", it->string, 0);
-	} else {
-		struct strbuf onebuf = STRBUF_INIT;
-		const char *one;
-		one = quote_path(it->string, s->prefix, &onebuf);
-		printf(" %s\n", one);
-		strbuf_release(&onebuf);
-	}
+	else
+		print_cquoted(" %s\n", it->string, s->prefix);
 }
 
 static void wt_shortstatus_status(struct string_list_item *it,
@@ -1875,27 +1885,9 @@ static void wt_shortstatus_status(struct string_list_item *it,
 		if (d->rename_source)
 			fprintf(stdout, "%s%c", d->rename_source, 0);
 	} else {
-		struct strbuf onebuf = STRBUF_INIT;
-		const char *one;
-
-		if (d->rename_source) {
-			one = quote_path(d->rename_source, s->prefix, &onebuf);
-			if (*one != '"' && strchr(one, ' ') != NULL) {
-				putchar('"');
-				strbuf_addch(&onebuf, '"');
-				one = onebuf.buf;
-			}
-			printf("%s -> ", one);
-			strbuf_release(&onebuf);
-		}
-		one = quote_path(it->string, s->prefix, &onebuf);
-		if (*one != '"' && strchr(one, ' ') != NULL) {
-			putchar('"');
-			strbuf_addch(&onebuf, '"');
-			one = onebuf.buf;
-		}
-		printf("%s\n", one);
-		strbuf_release(&onebuf);
+		if (d->rename_source)
+			print_cquoted("%s -> ", d->rename_source, s->prefix);
+		print_cquoted("%s\n", it->string, s->prefix);
 	}
 }
 
@@ -1905,12 +1897,8 @@ static void wt_shortstatus_other(struct string_list_item *it,
 	if (s->null_termination) {
 		fprintf(stdout, "%s %s%c", sign, it->string, 0);
 	} else {
-		struct strbuf onebuf = STRBUF_INIT;
-		const char *one;
-		one = quote_path(it->string, s->prefix, &onebuf);
 		color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
-		printf(" %s\n", one);
-		strbuf_release(&onebuf);
+		print_cquoted(" %s\n", it->string, s->prefix);
 	}
 }