merge: use skip_prefix to parse config key

Instead of using `starts_with()`, the magic number 7, `strlen()` and a
fair number of additions to verify the three parts of the config key
"branch.<branch>.mergeoptions", use `skip_prefix()` to jump through them
more explicitly.

We need to introduce a new variable for this (we certainly can't modify
`k` just because we see "branch."!). With `skip_prefix()` we often use
quite bland names like `p` or `str`. Let's do the same. If and when this
function needs to do more prefix-skipping, we'll have a generic variable
ready for this.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Martin Ågren 2020-04-11 09:11:45 +02:00 committed by Junio C Hamano
parent 9fadedd637
commit 9881b451f3

View file

@ -597,10 +597,12 @@ static void parse_branch_merge_options(char *bmo)
static int git_merge_config(const char *k, const char *v, void *cb)
{
int status;
const char *str;
if (branch && starts_with(k, "branch.") &&
starts_with(k + 7, branch) &&
!strcmp(k + 7 + strlen(branch), ".mergeoptions")) {
if (branch &&
skip_prefix(k, "branch.", &str) &&
skip_prefix(str, branch, &str) &&
!strcmp(str, ".mergeoptions")) {
free(branch_mergeoptions);
branch_mergeoptions = xstrdup(v);
return 0;