[PATCH] fetch: prefer suffix substitution in compact fetch.output

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I have a remote named "jch" and it has a branch with the same name. And
fetch.output is set to "compact". Fetching this remote looks like this

 From https://github.com/gitster/git
  + eb7fd39f6b...835363af2f jch                -> */jch  (forced update)
    6f11fd5edb..59b12ae96a  nd/config-move-to  -> jch/*
  * [new branch]            nd/diff-parseopt   -> jch/*
  * [new branch]            nd/the-index-final -> jch/*

Notice that the local side of branch jch starts with "*" instead of
ending with it like the rest. It's not exactly wrong. It just looks
weird.

This patch changes the find-and-replace code a bit to try finding prefix
first before falling back to strstr() which finds a substring from left
to right. Now we have something less OCD

 From https://github.com/gitster/git
  + eb7fd39f6b...835363af2f jch                -> jch/*  (forced update)
    6f11fd5edb..59b12ae96a  nd/config-move-to  -> jch/*
  * [new branch]            nd/diff-parseopt   -> jch/*
  * [new branch]            nd/the-index-final -> jch/*

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 builtin/fetch.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/builtin/fetch.c b/builtin/fetch.c
index e0140327aa..e0173f8a33 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -629,9 +629,14 @@ static int find_and_replace(struct strbuf *haystack,
 			    const char *needle,
 			    const char *placeholder)
 {
-	const char *p = strstr(haystack->buf, needle);
+	const char *p = NULL;
 	int plen, nlen;
 
+	nlen = strlen(needle);
+	if (ends_with(haystack->buf, needle))
+		p = haystack->buf + haystack->len - nlen;
+	else
+		p = strstr(haystack->buf, needle);
 	if (!p)
 		return 0;
 
@@ -639,7 +644,6 @@ static int find_and_replace(struct strbuf *haystack,
 		return 0;
 
 	plen = strlen(p);
-	nlen = strlen(needle);
 	if (plen > nlen && p[nlen] != '/')
 		return 0;
 
-- 
2.20.1.560.g70ca8b83ee




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