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Merge branch 'mk/diff-ignore-regex'

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"git diff" family of commands learned the "-I<regex>" option to
ignore hunks whose changed lines all match the given pattern.

* mk/diff-ignore-regex:
  diff: add -I<regex> that ignores matching changes
  merge-base, xdiff: zero out xpparam_t structures
This commit is contained in:
Junio C Hamano
2020-11-02 13:17:43 -08:00
parent c23cd78e81 296d4a94e7
commit 1ae0949a03
10 changed files with 226 additions and 2 deletions
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23
diff.c
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@ -3587,6 +3587,8 @@ static void builtin_diff(const char *name_a,
if (header.len && !o->flags.suppress_diff_headers)
ecbdata.header = &header;
xpp.flags = o->xdl_opts;
xpp.ignore_regex = o->ignore_regex;
xpp.ignore_regex_nr = o->ignore_regex_nr;
xpp.anchors = o->anchors;
xpp.anchors_nr = o->anchors_nr;
xecfg.ctxlen = o->context;
@ -3716,6 +3718,8 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
xpp.flags = o->xdl_opts;
xpp.ignore_regex = o->ignore_regex;
xpp.ignore_regex_nr = o->ignore_regex_nr;
xpp.anchors = o->anchors;
xpp.anchors_nr = o->anchors_nr;
xecfg.ctxlen = o->context;
@ -5203,6 +5207,22 @@ static int diff_opt_patience(const struct option *opt,
return 0;
}
static int diff_opt_ignore_regex(const struct option *opt,
const char *arg, int unset)
{
struct diff_options *options = opt->value;
regex_t *regex;
BUG_ON_OPT_NEG(unset);
regex = xmalloc(sizeof(*regex));
if (regcomp(regex, arg, REG_EXTENDED | REG_NEWLINE))
return error(_("invalid regex given to -I: '%s'"), arg);
ALLOC_GROW(options->ignore_regex, options->ignore_regex_nr + 1,
options->ignore_regex_alloc);
options->ignore_regex[options->ignore_regex_nr++] = regex;
return 0;
}
static int diff_opt_pickaxe_regex(const struct option *opt,
const char *arg, int unset)
{
@ -5491,6 +5511,9 @@ static void prep_parse_options(struct diff_options *options)
OPT_BIT_F(0, "ignore-blank-lines", &options->xdl_opts,
N_("ignore changes whose lines are all blank"),
XDF_IGNORE_BLANK_LINES, PARSE_OPT_NONEG),
OPT_CALLBACK_F('I', "ignore-matching-lines", options, N_("<regex>"),
N_("ignore changes whose all lines match <regex>"),
0, diff_opt_ignore_regex),
OPT_BIT(0, "indent-heuristic", &options->xdl_opts,
N_("heuristic to shift diff hunk boundaries for easy reading"),
XDF_INDENT_HEURISTIC),