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be26d2b29b
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Junio C Hamano be26d2b29b describe: do not use cmd_*() as a subroutine 
The cmd_foo() function is a moral equivalent of 'main' for a Git
subcommand 'git foo', and as such, it is allowed to do many things
that make it unsuitable to be called as a subroutine, including

 - call exit(3) to terminate the process;

 - allocate resource held and used throughout its lifetime, without
   releasing it upon return/exit;

 - rely on global variables being initialized at program startup,
   and update them as needed, making another clean invocation of the
   function impossible.

The call to cmd_diff_index() "git describe" makes has been working
by accident that the function did not call exit(3); it sets a bad
precedent for people to cut and paste.

We could invoke it via the run_command() interface, but the diff
family of commands have helper functions in diff-lib.c that are
meant to be usable as subroutines, and using the latter does not
make the resulting code all that longer.  Use it.

Note that there is also an invocation of cmd_name_rev() at the end;
"git describe --contains" massages its command line arguments to be
suitable for "git name-rev" invocation and jumps to it, never to
regain control.  This call is left as-is as an exception to the
rule.  When we start to allow calling name-rev repeatedly as a
helper function, we would be able to remove this call as well.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-10-11 15:01:37 +09:00
..
add.c Merge branch 'rj/add-chmod-error-message' into maint 2017-09-10 17:03:00 +09:00
am.c Merge branch 'pw/am-signoff' into maint 2017-09-10 17:02:51 +09:00
annotate.c
apply.c Convert read_mmblob to take struct object_id. 2016-09-07 12:59:42 -07:00
archive.c archive: read local configuration 2016-11-22 13:55:20 -08:00
bisect--helper.c
blame.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
branch.c ref-filter: consult want_color() before emitting colors 2017-07-13 12:42:51 -07:00
bundle.c bundle: use prefix_filename with bundle path 2017-03-21 11:18:41 -07:00
cat-file.c Merge branch 'jt/unify-object-info' 2017-07-05 13:32:57 -07:00
check-attr.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
check-ignore.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
check-mailmap.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
check-ref-format.c
checkout-index.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
checkout.c Merge branch 'ls/filter-process-delayed' into jt/subprocess-handshake 2017-07-26 12:56:19 -07:00
clean.c color: check color.ui in git_default_config() 2017-07-13 12:42:51 -07:00
clone.c Merge branch 'bw/clone-recursive-quiet' into maint 2017-09-10 17:02:49 +09:00
column.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
commit-tree.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
commit.c Merge branch 'ks/commit-abort-on-empty-message-fix' into maint 2017-08-23 14:33:44 -07:00
config.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
count-objects.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
credential.c credential: handle invalid arguments earlier 2017-05-30 14:45:03 +09:00
describe.c describe: do not use cmd_*() as a subroutine 2017-10-11 15:01:37 +09:00
diff-files.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
diff-index.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
diff-tree.c Merge branch 'jc/diff-tree-stale-comment' into maint 2017-06-24 15:29:31 -07:00
diff.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
difftool.c hashmap.h: compare function has access to a data field 2017-06-30 12:49:28 -07:00
fast-export.c hashmap.h: compare function has access to a data field 2017-06-30 12:49:28 -07:00
fetch-pack.c Rename sha1_array to oid_array 2017-03-31 08:33:56 -07:00
fetch.c Merge branch 'sb/pull-rebase-submodule' 2017-07-13 16:14:54 -07:00
fmt-merge-msg.c Merge branch 'dc/fmt-merge-msg-microcleanup' into maint 2017-08-23 14:33:52 -07:00
for-each-ref.c for-each-ref: load config earlier 2017-07-13 12:42:51 -07:00
fsck.c Merge branch 'rs/fsck-obj-leakfix' into maint 2017-09-10 17:02:53 +09:00
gc.c Merge branch 'jk/gc-pre-detach-under-hook' 2017-07-18 12:48:10 -07:00
get-tar-commit-id.c
grep.c Merge branch 'jk/ref-filter-colors' into maint 2017-08-23 14:33:42 -07:00
hash-object.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
help.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
index-pack.c Merge branch 'jt/unify-object-info' 2017-07-05 13:32:57 -07:00
init-db.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
interpret-trailers.c
log.c Merge branch 'jk/reflog-walk' into maint 2017-08-23 14:33:44 -07:00
ls-files.c ls-files: don't try to prune an empty index 2017-07-17 14:55:21 -07:00
ls-remote.c wildmatch: remove unused wildopts parameter 2017-06-23 18:27:07 -07:00
ls-tree.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
mailinfo.c prefix_filename: return newly allocated string 2017-03-21 11:18:41 -07:00
mailsplit.c mailinfo & mailsplit: check for EOF while parsing 2017-05-08 12:18:19 +09:00
merge-base.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
merge-file.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
merge-index.c Convert GIT_SHA1_HEXSZ used for allocation to GIT_MAX_HEXSZ 2017-03-26 22:08:21 -07:00
merge-ours.c
merge-recursive.c i18n: merge-recursive: mark verbose message for translation 2016-09-15 13:17:32 -07:00
merge-tree.c Convert lookup_blob to struct object_id 2017-05-08 15:12:57 +09:00
merge.c Merge branch 'rs/merge-microcleanup' into maint 2017-09-10 17:03:02 +09:00
mktag.c usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
mktree.c mktree: plug memory leaks reported by Coverity 2017-05-08 12:18:19 +09:00
mv.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
name-rev.c Merge branch 'ab/wildmatch' 2017-07-10 13:42:51 -07:00
notes.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
pack-objects.c Merge branch 'rs/pack-objects-pbase-cleanup' into maint 2017-08-23 14:33:48 -07:00
pack-redundant.c pack-redundant: plug memory leak 2017-05-08 12:18:19 +09:00
pack-refs.c refs: delete pack_refs() in favor of refs_pack_refs() 2017-04-14 03:53:25 -07:00
patch-id.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
prune-packed.c sha1_file: guard against invalid loose subdirectory numbers 2017-06-24 11:09:52 -07:00
prune.c Merge branch 'rs/sha1-name-readdir-optim' 2017-07-05 13:32:56 -07:00
pull.c Merge branch 'sb/pull-rebase-submodule' 2017-07-13 16:14:54 -07:00
push.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
read-tree.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
rebase--helper.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
receive-pack.c Merge branch 'rs/use-div-round-up' 2017-07-12 15:18:23 -07:00
reflog.c Merge branch 'ab/wildmatch' 2017-07-10 13:42:51 -07:00
remote-ext.c remote-{ext,fd}: print usage message on invalid arguments 2017-05-30 14:45:04 +09:00
remote-fd.c remote-{ext,fd}: print usage message on invalid arguments 2017-05-30 14:45:04 +09:00
remote.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
repack.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
replace.c Merge branch 'ab/wildmatch' 2017-07-10 13:42:51 -07:00
rerere.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
reset.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
rev-list.c Merge branch 'jk/rev-list-empty-input' into maint 2017-09-10 17:02:48 +09:00
rev-parse.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
revert.c cherry-pick/revert: reject --rerere-autoupdate when continuing 2017-08-02 15:16:09 -07:00
rm.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
send-pack.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
shortlog.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
show-branch.c color: check color.ui in git_default_config() 2017-07-13 12:42:51 -07:00
show-ref.c show-ref: remove a stale comment 2017-01-23 18:51:56 -08:00
stripspace.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
submodule--helper.c Merge branch 'bw/push-options-recursively-to-submodules' into maint 2017-09-10 17:02:49 +09:00
symbolic-ref.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
tag.c Merge branch 'ma/pager-per-subcommand-action' into maint 2017-09-10 17:02:48 +09:00
unpack-file.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
unpack-objects.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
update-index.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
update-ref.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
update-server-info.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
upload-archive.c upload-archive: handle "-h" option early 2017-05-30 14:45:04 +09:00
var.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
verify-commit.c Merge branch 'bw/config-h' 2017-06-24 14:28:41 -07:00
verify-pack.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00
verify-tag.c ref-filter: abstract ref format into its own struct 2017-07-13 12:42:50 -07:00
worktree.c Merge branch 'ab/free-and-null' 2017-06-24 14:28:41 -07:00
write-tree.c config: don't include config.h by default 2017-06-15 12:56:22 -07:00