Fix remote.<remote>.vcs

remote.<remote>.vcs causes remote->foreign_vcs to be set on entry to
transport_get(). Unfortunately, the code assumed that any such entry
is stale from previous round.

Fix this by making VCS set by URL to be volatile w.r.t. transport_get()
instead.

Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Acked-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/transport.c b/transport.c
index 7714fdb6c6578c711dc0b98a2086669a6a797257..87581b85a160cb57b27e422c01a6eb76e547c87f 100644 (file)
--- a/transport.c
+++ b/transport.c
@@ -912,20 +912,19 @@ static int external_specification_len(const char *url)
 
 struct transport *transport_get(struct remote *remote, const char *url)
 {
+       const char *helper;
        struct transport *ret = xcalloc(1, sizeof(*ret));
 
        if (!remote)
                die("No remote provided to transport_get()");
 
        ret->remote = remote;
+       helper = remote->foreign_vcs;
 
        if (!url && remote && remote->url)
                url = remote->url[0];
        ret->url = url;
 
-       /* In case previous URL had helper forced, reset it. */
-       remote->foreign_vcs = NULL;
-
        /* maybe it is a foreign URL? */
        if (url) {
                const char *p = url;
@@ -933,11 +932,11 @@ struct transport *transport_get(struct remote *remote, const char *url)
                while (isalnum(*p))
                        p++;
                if (!prefixcmp(p, "::"))
-                       remote->foreign_vcs = xstrndup(url, p - url);
+                       helper = xstrndup(url, p - url);
        }
 
-       if (remote && remote->foreign_vcs) {
-               transport_helper_init(ret, remote->foreign_vcs);
+       if (helper) {
+               transport_helper_init(ret, helper);
        } else if (!prefixcmp(url, "rsync:")) {
                ret->get_refs_list = get_refs_via_rsync;
                ret->fetch = fetch_objs_via_rsync;