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parse_opt_ref_sorting: always use with NONEG flag

The "--sort" parameter of for-each-ref, etc, does not handle negation,
and instead returns an error to the parse-options code. But neither
piece of code prints anything for the user, which may leave them
confused:

  $ git for-each-ref --no-sort
  $ echo $?
  129

As the comment in the callback function notes, this probably should
clear the list, which would make it consistent with other list-like
options (i.e., anything that uses OPT_STRING_LIST currently).
Unfortunately that's a bit tricky due to the way the ref-filter code
works. But in the meantime, let's at least make the error a little less
confusing:

  - switch to using PARSE_OPT_NONEG in the option definition, which will
    cause the options code to produce a useful message

  - since this was cut-and-pasted to four different spots, let's define
    a single OPT_REF_SORT() macro that we can use everywhere

  - the callback can use BUG_ON_OPT_NEG() to make sure the correct flags
    are used (incidentally, this also satisfies -Wunused-parameters,
    since we're now looking at "unset")

  - expand the comment into a NEEDSWORK to make it clear that the
    direction is right, but the details need to be worked out

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
tags/v2.22.0-rc0
Jeff King Junio C Hamano 8 months ago
parent
commit
95be717cd5
6 changed files with 16 additions and 10 deletions
  1. +1
    -2
      builtin/branch.c
  2. +1
    -2
      builtin/for-each-ref.c
  3. +1
    -2
      builtin/ls-remote.c
  4. +1
    -2
      builtin/tag.c
  5. +7
    -2
      ref-filter.c
  6. +5
    -0
      ref-filter.h

+ 1
- 2
builtin/branch.c View File

@@ -644,8 +644,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
OPT_MERGED(&filter, N_("print only branches that are merged")),
OPT_NO_MERGED(&filter, N_("print only branches that are not merged")),
OPT_COLUMN(0, "column", &colopts, N_("list branches in columns")),
OPT_CALLBACK(0 , "sort", sorting_tail, N_("key"),
N_("field name to sort on"), &parse_opt_ref_sorting),
OPT_REF_SORT(sorting_tail),
{
OPTION_CALLBACK, 0, "points-at", &filter.points_at, N_("object"),
N_("print only branches of the object"), 0, parse_opt_object_name


+ 1
- 2
builtin/for-each-ref.c View File

@@ -37,8 +37,7 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
OPT_INTEGER( 0 , "count", &maxcount, N_("show only <n> matched refs")),
OPT_STRING( 0 , "format", &format.format, N_("format"), N_("format to use for the output")),
OPT__COLOR(&format.use_color, N_("respect format colors")),
OPT_CALLBACK(0 , "sort", sorting_tail, N_("key"),
N_("field name to sort on"), &parse_opt_ref_sorting),
OPT_REF_SORT(sorting_tail),
OPT_CALLBACK(0, "points-at", &filter.points_at,
N_("object"), N_("print only refs which points at the given object"),
parse_opt_object_name),


+ 1
- 2
builtin/ls-remote.c View File

@@ -67,8 +67,7 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix)
OPT_BIT(0, "refs", &flags, N_("do not show peeled tags"), REF_NORMAL),
OPT_BOOL(0, "get-url", &get_url,
N_("take url.<base>.insteadOf into account")),
OPT_CALLBACK(0 , "sort", sorting_tail, N_("key"),
N_("field name to sort on"), &parse_opt_ref_sorting),
OPT_REF_SORT(sorting_tail),
OPT_SET_INT_F(0, "exit-code", &status,
N_("exit with exit code 2 if no matching refs are found"),
2, PARSE_OPT_NOCOMPLETE),


+ 1
- 2
builtin/tag.c View File

@@ -412,8 +412,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
OPT_WITHOUT(&filter.no_commit, N_("print only tags that don't contain the commit")),
OPT_MERGED(&filter, N_("print only tags that are merged")),
OPT_NO_MERGED(&filter, N_("print only tags that are not merged")),
OPT_CALLBACK(0 , "sort", sorting_tail, N_("key"),
N_("field name to sort on"), &parse_opt_ref_sorting),
OPT_REF_SORT(sorting_tail),
{
OPTION_CALLBACK, 0, "points-at", &filter.points_at, N_("object"),
N_("print only tags of the object"), PARSE_OPT_LASTARG_DEFAULT,


+ 7
- 2
ref-filter.c View File

@@ -2337,8 +2337,13 @@ void parse_ref_sorting(struct ref_sorting **sorting_tail, const char *arg)

int parse_opt_ref_sorting(const struct option *opt, const char *arg, int unset)
{
if (!arg) /* should --no-sort void the list ? */
return -1;
/*
* NEEDSWORK: We should probably clear the list in this case, but we've
* already munged the global used_atoms list, which would need to be
* undone.
*/
BUG_ON_OPT_NEG(unset);

parse_ref_sorting(opt->value, arg);
return 0;
}


+ 5
- 0
ref-filter.h View File

@@ -96,6 +96,11 @@ struct ref_format {
#define OPT_MERGED(f, h) _OPT_MERGED_NO_MERGED("merged", f, h)
#define OPT_NO_MERGED(f, h) _OPT_MERGED_NO_MERGED("no-merged", f, h)

#define OPT_REF_SORT(var) \
OPT_CALLBACK_F(0, "sort", (var), \
N_("key"), N_("field name to sort on"), \
PARSE_OPT_NONEG, parse_opt_ref_sorting)

/*
* API for filtering a set of refs. Based on the type of refs the user
* has requested, we iterate through those refs and apply filters


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