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pretty: make empty userformats truly empty

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If the user provides an empty format with "--format=", we
end up putting in extra whitespace that the user cannot
prevent. This comes from two places:

  1. If the format is missing a terminating newline, we add
     one automatically. This makes sense for --format=%h, but
     not for a truly empty format.

  2. We add an extra newline between the pretty-printed
     format and a diff or diffstat. If the format is empty,
     there's no point in doing so if there's nothing to
     separate.

With this patch, one can get a diff with no other cruft out
of "diff-tree --format= $commit".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2014-07-29 13:56:48 -04:00
committed by Junio C Hamano
parent c75e7ad28a
commit b9c7d6e433
4 changed files with 11 additions and 3 deletions
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1
commit.h
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@ -159,6 +159,7 @@ extern void get_commit_format(const char *arg, struct rev_info *);
extern const char *format_subject(struct strbuf *sb, const char *msg,
const char *line_separator);
extern void userformat_find_requirements(const char *fmt, struct userformat_want *w);
extern int commit_format_is_empty(enum cmit_fmt);
extern void format_commit_message(const struct commit *commit,
const char *format, struct strbuf *sb,
const struct pretty_print_context *context);