diff options
| author | Jeff King <peff@peff.net> | 2010-01-13 12:35:31 -0500 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2010-01-14 09:24:42 -0800 |
| commit | 0a0416a34a7ef5c64f4e0226371e4cab8c1ba982 (patch) | |
| tree | 76ce0e33cbe408a9ead5d29f66a1ec171a8d106c /Documentation/technical | |
| parent | 902f235378cb2b2f6dd5dd664b9630c95321f0ae (diff) | |
| download | git-0a0416a34a7ef5c64f4e0226371e4cab8c1ba982.tar.gz git-0a0416a34a7ef5c64f4e0226371e4cab8c1ba982.tar.xz | |
strbuf_expand: convert "%%" to "%"
The only way to safely quote arbitrary text in a pretty-print user
format is to replace instances of "%" with "%x25". This is slightly
unreadable, and many users would expect "%%" to produce a single
"%", as that is what printf format specifiers do.
This patch converts "%%" to "%" for all users of strbuf_expand():
(1) git-daemon interpolated paths
(2) pretty-print user formats
(3) merge driver command lines
Case (1) was already doing the conversion itself outside of
strbuf_expand(). Case (2) is the intended beneficiary of this patch.
Case (3) users probably won't notice, but as this is user-facing
behavior, consistently providing the quoting mechanism makes sense.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/technical')
| -rw-r--r-- | Documentation/technical/api-strbuf.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/technical/api-strbuf.txt b/Documentation/technical/api-strbuf.txt index a0e0f850f..3b1da10f2 100644 --- a/Documentation/technical/api-strbuf.txt +++ b/Documentation/technical/api-strbuf.txt @@ -199,6 +199,10 @@ character if the letter `n` appears after a `%`. The function returns the length of the placeholder recognized and `strbuf_expand()` skips over it. + +The format `%%` is automatically expanded to a single `%` as a quoting +mechanism; callers do not need to handle the `%` placeholder themselves, +and the callback function will not be invoked for this placeholder. ++ All other characters (non-percent and not skipped ones) are copied verbatim to the strbuf. If the callback returned zero, meaning that the placeholder is unknown, then the percent sign is copied, too. |