Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
Documentation/diff-options.txt | 2 +-
diff.c | 23 ++++++++++++++++++++---
parse-options.h | 5 +++--
3 files changed, 24 insertions(+), 6 deletions(-)
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index b94d332f71..0711734b12 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -36,7 +36,7 @@ endif::git-format-patch[]
-U<n>::
--unified=<n>::
Generate diffs with <n> lines of context instead of
- the usual three.
+ the usual three. Implies `--patch`.
ifndef::git-format-patch[]
Implies `-p`.
endif::git-format-patch[]
diff --git a/diff.c b/diff.c
index 7b78af623b..5e31b95426 100644
--- a/diff.c
+++ b/diff.c
@@ -4865,6 +4865,22 @@ static int parse_objfind_opt(struct diff_options *opt, const char *arg)
return 1;
}
+static int diff_opt_unified(const struct option *opt,
+ const char *arg, int unset)
+{
+ struct diff_options *options = opt->value;
+ char *s;
+
+ BUG_ON_OPT_NEG(unset);
+
+ options->context = strtol(arg, &s, 10);
+ if (*s)
+ return error(_("%s expects a numerical value"), "--unified");
+ enable_patch_output(&options->output_format);
+
+ return 0;
+}
+
static void prep_parse_options(struct diff_options *options)
{
struct option parseopts[] = {
@@ -4875,6 +4891,9 @@ static void prep_parse_options(struct diff_options *options)
OPT_BITOP('u', NULL, &options->output_format,
N_("generate patch"),
DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT),
+ OPT_CALLBACK_F('U', "unified", options, N_("<n>"),
+ N_("generate diffs with <n> lines context"),
+ PARSE_OPT_NONEG, diff_opt_unified),
OPT_END()
};
@@ -4903,9 +4922,7 @@ int diff_opt_parse(struct diff_options *options,
return ac;
/* Output format options */
- if (opt_arg(arg, 'U', "unified", &options->context))
- enable_patch_output(&options->output_format);
- else if (!strcmp(arg, "--raw"))
+ if (!strcmp(arg, "--raw"))
options->output_format |= DIFF_FORMAT_RAW;
else if (!strcmp(arg, "--patch-with-raw")) {
enable_patch_output(&options->output_format);
diff --git a/parse-options.h b/parse-options.h
index ce75278804..7d83e2971d 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -134,6 +134,8 @@ struct option {
#define OPT_SET_INT_F(s, l, v, h, i, f) { OPTION_SET_INT, (s), (l), (v), NULL, \
(h), PARSE_OPT_NOARG | (f), NULL, (i) }
#define OPT_BOOL_F(s, l, v, h, f) OPT_SET_INT_F(s, l, v, h, 1, f)
+#define OPT_CALLBACK_F(s, l, v, a, h, f, cb) \
+ { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), (cb) }
#define OPT_END() { OPTION_END }
#define OPT_ARGUMENT(l, h) { OPTION_ARGUMENT, 0, (l), NULL, NULL, \
@@ -164,8 +166,7 @@ struct option {
#define OPT_EXPIRY_DATE(s, l, v, h) \
{ OPTION_CALLBACK, (s), (l), (v), N_("expiry-date"),(h), 0, \
parse_opt_expiry_date_cb }
-#define OPT_CALLBACK(s, l, v, a, h, f) \
- { OPTION_CALLBACK, (s), (l), (v), (a), (h), 0, (f) }
+#define OPT_CALLBACK(s, l, v, a, h, f) OPT_CALLBACK_F(s, l, v, a, h, 0, f)
#define OPT_NUMBER_CALLBACK(v, h, f) \
{ OPTION_NUMBER, 0, NULL, (v), NULL, (h), \
PARSE_OPT_NOARG | PARSE_OPT_NONEG, (f) }
--
2.20.0.482.g66447595a7
