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Matthias Aßhauer a3952f8e7c help: make sure local html page exists before calling external processes 
We check that git.html exists, regardless of the page the user wants to open.
Checking whether the requested page exists instead gives us a smoother user
experience in two use cases:

1) The requested page doesn't exist

When calling a git command and there is an error, most users reasonably expect
git to produce an error message on the standard error stream, but in this case
we pass the filepath to git web--browse which passes it on to a browser (or a
helper program like xdg-open or start that should in turn open a browser)
without any error and many GUI based browsers or helpers won't output such a
message onto the standard error stream.

Especially the helper programs tend to show the corresponding error message in
a message box and wait for user input before exiting. This leaves users in
interactive console sessions without an error message in their console,
without a console prompt and without the help page they expected.

2) git.html is missing for some reason, but the user asked for some other page

We currently refuse to show any local html help page when we can't find
git.html. Even if the requested help page exists. If we check for the requested
page instead, we can show the user all available pages and only error out on
those that don't exist.

Signed-off-by: Matthias Aßhauer <mha1993@live.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-14 10:04:08 -07:00
..
add.c dir.[ch]: replace dir_init() with DIR_INIT 2021-07-01 12:32:22 -07:00
am.c *.c static functions: add missing __attribute__((format)) 2021-07-13 15:20:20 -07:00
annotate.c strvec: rename struct fields 2020-07-30 19:18:06 -07:00
apply.c
archive.c
bisect--helper.c *.c static functions: add missing __attribute__((format)) 2021-07-13 15:20:20 -07:00
blame.c Merge branch 'rs/blame-optim' 2021-02-25 16:43:29 -08:00
branch.c ref-filter: reuse output buffer 2021-04-20 11:09:50 -07:00
bugreport.c builtin/bugreport: don't leak prefixed filename 2021-04-28 09:25:45 +09:00
bundle.c bundle: remove "ref_list" in favor of string-list.c API 2021-07-06 12:10:17 -07:00
cat-file.c cat-file: merge two block into one 2021-06-04 07:50:26 +09:00
check-attr.c
check-ignore.c dir.[ch]: replace dir_init() with DIR_INIT 2021-07-01 12:32:22 -07:00
check-mailmap.c shortlog: remove unused(?) "repo-abbrev" feature 2021-01-12 14:04:42 -08:00
check-ref-format.c
checkout--worker.c builtin/checkout--worker: zero-initialise struct to avoid MSAN complaints 2021-06-15 12:07:56 +09:00
checkout-index.c Merge branch 'mt/parallel-checkout-part-3' 2021-05-16 21:05:23 +09:00
checkout.c checkout: stop expanding sparse indexes 2021-07-14 15:05:53 -07:00
clean.c dir.[ch]: replace dir_init() with DIR_INIT 2021-07-01 12:32:22 -07:00
clone.c Merge branch 'jk/clone-clean-upon-transport-error' 2021-06-14 13:33:26 +09:00
column.c column, range-diff: downcase option description 2021-03-29 14:06:08 -07:00
commit-graph.c builtin/*: update usage format 2021-01-06 15:10:49 -08:00
commit-tree.c Use OPT_CALLBACK and OPT_CALLBACK_F 2020-04-28 10:47:10 -07:00
commit.c Merge branch 'ds/commit-and-checkout-with-sparse-index' 2021-08-04 13:28:53 -07:00
config.c config: unify code paths to get global config paths 2021-04-19 14:16:59 -07:00
count-objects.c
credential-cache--daemon.c unix-socket: add backlog size option to unix_stream_listen() 2021-03-15 14:32:51 -07:00
credential-cache.c unix-socket: disallow chdir() when creating unix domain sockets 2021-03-15 14:32:51 -07:00
credential-store.c crendential-store: use timeout when locking file 2020-11-25 12:30:18 -08:00
credential.c credential: load default config 2020-10-16 12:30:45 -07:00
describe.c hash: provide per-algorithm null OIDs 2021-04-27 16:31:39 +09:00
diff-files.c Merge branch 'jc/diffcore-rotate' 2021-02-25 16:43:30 -08:00
diff-index.c diff-merges: move specific diff-index "-m" handling to diff-index 2021-05-21 09:24:14 +09:00
diff-tree.c Merge branch 'jc/diffcore-rotate' 2021-02-25 16:43:30 -08:00
diff.c Merge branch 'dl/diff-merge-base' 2021-07-28 13:17:59 -07:00
difftool.c Merge branch 'ab/cmd-foo-should-return' 2021-07-08 13:15:04 -07:00
env--helper.c assert PARSE_OPT_NONEG in parse-options callbacks 2020-09-30 12:53:47 -07:00
fast-export.c hash: provide per-algorithm null OIDs 2021-04-27 16:31:39 +09:00
fast-import.c Use the final_oid_fn to finalize hashing of object IDs 2021-04-27 16:31:38 +09:00
fetch-pack.c connect, transport: encapsulate arg in struct 2021-02-05 13:49:54 -08:00
fetch.c Merge branch 'ab/fetch-negotiate-segv-fix' 2021-07-16 17:42:48 -07:00
fmt-merge-msg.c Lib-ify fmt-merge-msg 2020-03-24 15:04:43 -07:00
for-each-ref.c Merge branch 'ah/plugleaks' 2021-05-07 12:47:41 +09:00
for-each-repo.c builtin/for-each-repo: remove unnecessary argv copy to plug leak 2021-07-26 12:19:20 -07:00
fsck.c Merge branch 'ab/fsck-api-cleanup' 2021-06-02 07:34:27 +09:00
gc.c maintenance: fix two memory leaks 2021-05-12 07:00:45 +09:00
get-tar-commit-id.c
grep.c dir.[ch]: replace dir_init() with DIR_INIT 2021-07-01 12:32:22 -07:00
hash-object.c
help.c help: make sure local html page exists before calling external processes 2021-09-14 10:04:08 -07:00
index-pack.c *.c static functions: don't forward-declare __attribute__ 2021-07-12 12:09:53 -07:00
init-db.c Merge branch 'mt/init-template-userpath-fix' 2021-05-25 16:21:20 +09:00
interpret-trailers.c Use OPT_CALLBACK and OPT_CALLBACK_F 2020-04-28 10:47:10 -07:00
log.c Merge branch 'jk/log-decorate-optim' 2021-07-28 13:17:58 -07:00
ls-files.c dir.[ch]: replace dir_init() with DIR_INIT 2021-07-01 12:32:22 -07:00
ls-remote.c Merge branch 'ah/plugleaks' 2021-04-07 16:54:08 -07:00
ls-tree.c tree.h API: simplify read_tree_recursive() signature 2021-03-20 16:09:26 -07:00
mailinfo.c mailinfo: allow squelching quoted CRLF warning 2021-05-10 15:06:22 +09:00
mailsplit.c
merge-base.c
merge-file.c
merge-index.c merge-index: ensure full index 2021-04-14 13:47:21 -07:00
merge-ours.c builtins + test helpers: use return instead of exit() in cmd_* 2021-06-09 09:15:58 +09:00
merge-recursive.c
merge-tree.c xdiff users: use designated initializers for out_line 2021-05-11 12:47:31 +09:00
merge.c Merge branch 'pb/merge-autostash-more' 2021-08-04 13:28:54 -07:00
mktag.c fsck.c: add an fsck_set_msg_type() API that takes enums 2021-03-28 19:03:10 -07:00
mktree.c builtins + test helpers: use return instead of exit() in cmd_* 2021-06-09 09:15:58 +09:00
multi-pack-index.c multi-pack-index: fix potential segfault without sub-command 2021-07-19 15:24:01 -07:00
mv.c builtin/mv: free or UNLEAK multiple pointers at end of cmd_mv 2021-07-26 12:19:20 -07:00
name-rev.c oid_pos(): access table through const pointers 2021-01-28 12:03:26 -08:00
notes.c use CALLOC_ARRAY 2021-03-13 16:00:09 -08:00
pack-objects.c Merge branch 'ab/pack-linkage-fix' 2021-05-27 12:36:58 +09:00
pack-redundant.c builtin/pack-redundant: avoid casting buffers to struct object_id 2021-04-27 16:31:38 +09:00
pack-refs.c
patch-id.c
prune-packed.c Lib-ify prune-packed 2020-03-24 15:04:44 -07:00
prune.c Merge branch 'tb/shallow-cleanup' 2020-05-13 12:19:18 -07:00
pull.c pull: trivial whitespace style fix 2021-06-19 16:36:17 +09:00
push.c push: don't get a full remote object 2021-06-02 10:12:03 +09:00
range-diff.c column, range-diff: downcase option description 2021-03-29 14:06:08 -07:00
read-tree.c Use OPT_CALLBACK and OPT_CALLBACK_F 2020-04-28 10:47:10 -07:00
rebase.c builtin/rebase: fix options.strategy memory lifecycle 2021-07-26 12:19:21 -07:00
receive-pack.c *.c static functions: don't forward-declare __attribute__ 2021-07-12 12:09:53 -07:00
reflog.c reflog expire --stale-fix: be generous about missing objects 2021-02-11 09:21:52 -08:00
remote-ext.c strvec: convert builtin/ callers away from argv_array name 2020-07-28 15:02:18 -07:00
remote-fd.c
remote.c Merge branch 'ah/plugleaks' 2021-04-07 16:54:08 -07:00
repack.c repack: avoid loosening promisor objects in partial clones 2021-04-28 13:36:13 +09:00
replace.c strvec: rename struct fields 2020-07-30 19:18:06 -07:00
rerere.c xdiff users: use designated initializers for out_line 2021-05-11 12:47:31 +09:00
reset.c reset: free instead of leaking unneeded ref 2021-03-14 15:57:59 -07:00
rev-list.c rev-list: add option for --pretty=format without header 2021-07-12 10:12:31 -07:00
rev-parse.c rev-parse: mark die() messages for translation 2021-05-17 18:39:53 +09:00
revert.c sequencer: fix edit handling for cherry-pick and revert messages 2021-03-31 14:10:50 -07:00
rm.c Merge branch 'ah/plugleaks' 2021-05-07 12:47:41 +09:00
send-pack.c push: parse and set flag for "--force-if-includes" 2020-10-03 09:59:19 -07:00
shortlog.c Merge branch 'ab/mailmap' 2021-01-25 14:19:19 -08:00
show-branch.c show-branch: don't <COLOR></RESET> for space characters 2021-06-28 09:33:06 -07:00
show-index.c builtin/show-index: set the algorithm for object IDs 2021-04-27 16:31:39 +09:00
show-ref.c refs: switch peel_ref() to peel_iterated_oid() 2021-01-21 15:51:31 -08:00
sparse-checkout.c use fspathhash() everywhere 2021-07-30 12:14:27 -07:00
stash.c Merge branch 'ab/struct-init' 2021-07-16 17:42:53 -07:00
stripspace.c
submodule--helper.c Merge branch 'ah/plugleaks' 2021-08-04 13:28:52 -07:00
symbolic-ref.c symbolic-ref: don't leak shortened refname in check_symref() 2021-03-14 15:57:59 -07:00
tag.c ref-filter: reuse output buffer 2021-04-20 11:09:50 -07:00
unpack-file.c
unpack-objects.c hash: provide per-algorithm null OIDs 2021-04-27 16:31:39 +09:00
update-index.c update-index: ensure full index 2021-04-14 13:47:29 -07:00
update-ref.c update-ref: disallow "start" for ongoing transactions 2020-11-16 13:44:01 -08:00
update-server-info.c
upload-archive.c strvec: rename struct fields 2020-07-30 19:18:06 -07:00
upload-pack.c
var.c
verify-commit.c
verify-pack.c Merge branch 'bc/sha-256-part-3' 2020-08-11 18:04:11 -07:00
verify-tag.c
worktree.c worktree: teach add to accept --reason <string> with --lock 2021-07-15 13:30:59 -07:00
write-tree.c