From: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
When git is passed the --paginate option, starting up a pager requires
deciding what pager to start, which requires access to the core.pager
configuration.
At the relevant moment, the repository has not been searched for yet.
Attempting to access the configuration at this point results in
git_dir being set to .git [*], which is almost certainly not what was
wanted. In particular, when run from a subdirectory of the toplevel,
git --paginate does not respect the core.pager setting from the
current repository.
[*] unless GIT_DIR or GIT_CONFIG is set
So delay the pager startup when possible:
1. run_argv() already commits pager choice inside run_builtin() if a
command is found. For commands that use RUN_SETUP, waiting until
then fixes the problem described above: once git knows where to
look, it happily respects the core.pager setting.
2. list_common_cmds_help() prints out 29 lines and exits. This can
benefit from pagination, so we need to commit the pager choice
before writing this output.
Luckily ‘git’ without subcommand has no other reason to access a
repository, so it would be intuitive to ignore repository-local
configuration in this case. Simpler for now to choose a pager
using the funny code that notices a repository that happens to be
at .git. That this accesses a repository when it is very
convenient to is a bug but not an important one.
3. help_unknown_cmd() prints out a few lines to stderr. It is not
important to paginate this, so don’t.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
Signed-off-by: Jonathan Nieder <jrnieder@xxxxxxxxx>
---
Thanks for reading.
git.c | 2 +-
t/t7006-pager.sh | 58 ++++++++++++++++++++++++++++++++++++++++++-----------
2 files changed, 47 insertions(+), 13 deletions(-)
diff --git a/git.c b/git.c
index 99f0363..25e7693 100644
--- a/git.c
+++ b/git.c
@@ -511,12 +511,12 @@ int main(int argc, const char **argv)
argv++;
argc--;
handle_options(&argv, &argc, NULL);
- commit_pager_choice();
if (argc > 0) {
if (!prefixcmp(argv[0], "--"))
argv[0] += 2;
} else {
/* The user didn't specify a command; give them help */
+ commit_pager_choice();
printf("usage: %s\n\n", git_usage_string);
list_common_cmds_help();
printf("\n%s\n", git_more_info_string);
diff --git a/t/t7006-pager.sh b/t/t7006-pager.sh
index 2b106be..eefef45 100755
--- a/t/t7006-pager.sh
+++ b/t/t7006-pager.sh
@@ -244,9 +244,21 @@ test_PAGER_overrides() {
}
test_core_pager_overrides() {
+ if_local_config=
+ used_if_wanted='overrides PAGER'
+ test_core_pager "$@"
+}
+
+test_local_config_ignored() {
+ if_local_config='! '
+ used_if_wanted='is not used'
+ test_core_pager "$@"
+}
+
+test_core_pager() {
parse_args "$@"
- $test_expectation TTY "$cmd - core.pager overrides PAGER" "
+ $test_expectation TTY "$cmd - repository-local core.pager setting $used_if_wanted" "
unset GIT_PAGER;
rm -f core.pager_used ||
cleanup_fail &&
@@ -255,14 +267,26 @@ test_core_pager_overrides() {
export PAGER &&
git config core.pager 'wc >core.pager_used' &&
$full_command &&
- test -e core.pager_used
+ ${if_local_config}test -e core.pager_used
"
}
test_core_pager_subdir() {
+ if_local_config=
+ used_if_wanted='overrides PAGER'
+ test_pager_subdir_helper "$@"
+}
+
+test_no_local_config_subdir() {
+ if_local_config='! '
+ used_if_wanted='is not used'
+ test_pager_subdir_helper "$@"
+}
+
+test_pager_subdir_helper() {
parse_args "$@"
- $test_expectation TTY "$cmd - core.pager from subdirectory" "
+ $test_expectation TTY "$cmd - core.pager $used_if_wanted from subdirectory" "
unset GIT_PAGER;
rm -f core.pager_used &&
rm -fr sub ||
@@ -277,7 +301,7 @@ test_core_pager_subdir() {
cd sub &&
$full_command
) &&
- test -e core.pager_used
+ ${if_local_config}test -e core.pager_used
"
}
@@ -296,6 +320,20 @@ test_GIT_PAGER_overrides() {
"
}
+test_doesnt_paginate() {
+ parse_args "$@"
+
+ $test_expectation TTY "no pager for '$cmd'" "
+ rm -f GIT_PAGER_used ||
+ cleanup_fail &&
+
+ GIT_PAGER='wc >GIT_PAGER_used' &&
+ export GIT_PAGER &&
+ $full_command &&
+ ! test -e GIT_PAGER_used
+ "
+}
+
test_default_pager expect_success 'git log'
test_PAGER_overrides expect_success 'git log'
test_core_pager_overrides expect_success 'git log'
@@ -305,19 +343,15 @@ test_GIT_PAGER_overrides expect_success 'git log'
test_default_pager expect_success 'git -p log'
test_PAGER_overrides expect_success 'git -p log'
test_core_pager_overrides expect_success 'git -p log'
-test_core_pager_subdir expect_failure 'git -p log'
+test_core_pager_subdir expect_success 'git -p log'
test_GIT_PAGER_overrides expect_success 'git -p log'
test_default_pager expect_success test_must_fail 'git -p'
test_PAGER_overrides expect_success test_must_fail 'git -p'
-test_core_pager_overrides expect_success test_must_fail 'git -p'
-test_core_pager_subdir expect_failure test_must_fail 'git -p'
+test_local_config_ignored expect_failure test_must_fail 'git -p'
+test_no_local_config_subdir expect_success test_must_fail 'git -p'
test_GIT_PAGER_overrides expect_success test_must_fail 'git -p'
-test_default_pager expect_success test_must_fail 'git -p nonsense'
-test_PAGER_overrides expect_success test_must_fail 'git -p nonsense'
-test_core_pager_overrides expect_success test_must_fail 'git -p nonsense'
-test_core_pager_subdir expect_failure test_must_fail 'git -p nonsense'
-test_GIT_PAGER_overrides expect_success test_must_fail 'git -p nonsense'
+test_doesnt_paginate expect_success test_must_fail 'git -p nonsense'
test_done
--
1.7.1.579.ge2549
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