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-rw-r--r--diff.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/diff.c b/diff.c
index 4d3cf83a27..a654d46f6a 100644
--- a/diff.c
+++ b/diff.c
@@ -5211,9 +5211,11 @@ static int diff_opt_unified(const struct option *opt,
BUG_ON_OPT_NEG(unset);
- options->context = strtol(arg, &s, 10);
- if (*s)
- return error(_("%s expects a numerical value"), "--unified");
+ if (arg) {
+ options->context = strtol(arg, &s, 10);
+ if (*s)
+ return error(_("%s expects a numerical value"), "--unified");
+ }
enable_patch_output(&options->output_format);
return 0;
@@ -5272,7 +5274,7 @@ static void prep_parse_options(struct diff_options *options)
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),
+ PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_unified),
OPT_BOOL('W', "function-context", &options->flags.funccontext,
N_("generate diffs with <n> lines context")),
OPT_BIT_F(0, "raw", &options->output_format,
@@ -5352,7 +5354,7 @@ static void prep_parse_options(struct diff_options *options)
N_("show the given source prefix instead of \"a/\""),
PARSE_OPT_NONEG),
OPT_STRING_F(0, "dst-prefix", &options->b_prefix, N_("<prefix>"),
- N_("show the given source prefix instead of \"b/\""),
+ N_("show the given destination prefix instead of \"b/\""),
PARSE_OPT_NONEG),
OPT_CALLBACK_F(0, "line-prefix", options, N_("<prefix>"),
N_("prepend an additional prefix to every line of output"),
@@ -5453,13 +5455,13 @@ static void prep_parse_options(struct diff_options *options)
N_("equivalent to --word-diff=color --word-diff-regex=<regex>"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_color_words),
OPT_CALLBACK_F(0, "color-moved", options, N_("<mode>"),
- N_("move lines of code are colored differently"),
+ N_("moved lines of code are colored differently"),
PARSE_OPT_OPTARG, diff_opt_color_moved),
OPT_CALLBACK_F(0, "color-moved-ws", options, N_("<mode>"),
N_("how white spaces are ignored in --color-moved"),
0, diff_opt_color_moved_ws),
- OPT_GROUP(N_("Diff other options")),
+ OPT_GROUP(N_("Other diff options")),
OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"),
N_("when run from subdir, exclude changes outside and show relative paths"),
PARSE_OPT_NONEG | PARSE_OPT_OPTARG,