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interpret-trailers: add --parse convenience option

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The last few commits have added command line options that
can turn interpret-trailers into a parsing tool. Since
they'd most often be used together, let's provide a
convenient single option for callers to invoke this mode.

This is implemented as a callback rather than a boolean so
that its effect is applied immediately, as if those options
had been specified. Later options can then override them.
E.g.:

  git interpret-trailers --parse --no-unfold

would work.

Let's also update the documentation to make clear that this
parsing mode behaves quite differently than the normal
"add trailers to the input" mode.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2017-08-15 06:23:34 -04:00
committed by Junio C Hamano
parent 000023961a
commit 99e09dafd7
2 changed files with 26 additions and 7 deletions
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12
builtin/interpret-trailers.c
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@ -16,6 +16,16 @@ static const char * const git_interpret_trailers_usage[] = {
NULL
};
static int parse_opt_parse(const struct option *opt, const char *arg,
int unset)
{
struct process_trailer_options *v = opt->value;
v->only_trailers = 1;
v->only_input = 1;
v->unfold = 1;
return 0;
}
int cmd_interpret_trailers(int argc, const char **argv, const char *prefix)
{
struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT;
@ -27,6 +37,8 @@ int cmd_interpret_trailers(int argc, const char **argv, const char *prefix)
OPT_BOOL(0, "only-trailers", &opts.only_trailers, N_("output only the trailers")),
OPT_BOOL(0, "only-input", &opts.only_input, N_("do not apply config rules")),
OPT_BOOL(0, "unfold", &opts.unfold, N_("join whitespace-continued values")),
{ OPTION_CALLBACK, 0, "parse", &opts, NULL, N_("set parsing options"),
PARSE_OPT_NOARG | PARSE_OPT_NONEG, parse_opt_parse },
OPT_STRING_LIST(0, "trailer", &trailers, N_("trailer"),
N_("trailer(s) to add")),
OPT_END()