Jeff King <peff@xxxxxxxx> writes:
>> Backtracking will not fundamentally "fix" parsing of
>>
>> a.b=c=.d
>>
>> between twhse two
>>
>> [a "b="] c = ".d"
>> [a] b = "c=.d"
>>
>> unfortunately, I think. I do not think it is worth doing the "best
>> effort" with erroring out when ambiguous, because there is no way
>> for the end user to disambiguate, unless we introduce a different
>> syntax, at which point we cannot use config_parse_key() anymore.
>
> Ah, yeah, you're right. I thought the problem was just that the "split"
> was too naive, but it really is that the whole syntax is badly
> specified.
>
> I guess "git config --list" suffers from the same problem. You can get
> around it there with "-z", but that probably would not be very pleasant
> here. :)
>
> Probably not worth worrying too much about if nobody is complaining.
Yup.
Anyway, here is an updated one (the part of the patch to t/ is not
shown as it is unchanged).
-- >8 --
Subject: [PATCH] config: use git_config_parse_key() in git_config_parse_parameter()
The parsing of one-shot assignments of configuration variables that
come from the command line historically was quite loose and allowed
anything to pass. It also downcased everything in the variable name,
even a three-level <section>.<subsection>.<variable> name in which
the <subsection> part must be treated in a case sensitive manner.
Existing git_config_parse_key() helper is used to parse the variable
name that comes from the command line, i.e. "git config VAR VAL",
and handles these details correctly. Replace the strbuf_tolower()
call in git_config_parse_parameter() with a call to it to correct
both issues. git_config_parse_key() does a bit more things that are
not necessary for the purpose of this codepath (e.g. it allocates a
separate buffer to return the canonicalized variable name because it
takes a "const char *" input), but we are not in a performance-critical
codepath here.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
config.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/config.c b/config.c
index b8cce1dffa..1c1a1520ff 100644
--- a/config.c
+++ b/config.c
@@ -295,7 +295,9 @@ int git_config_parse_parameter(const char *text,
config_fn_t fn, void *data)
{
const char *value;
+ char *canonical_name;
struct strbuf **pair;
+ int ret;
pair = strbuf_split_str(text, '=', 2);
if (!pair[0])
@@ -313,13 +315,15 @@ int git_config_parse_parameter(const char *text,
strbuf_list_free(pair);
return error("bogus config parameter: %s", text);
}
- strbuf_tolower(pair[0]);
- if (fn(pair[0]->buf, value, data) < 0) {
- strbuf_list_free(pair);
- return -1;
+
+ if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
+ ret = -1;
+ } else {
+ ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
+ free(canonical_name);
}
strbuf_list_free(pair);
- return 0;
+ return ret;
}
int git_config_from_parameters(config_fn_t fn, void *data)
--
2.12.0-rc2-308-gbf7e63c428