git/Documentation/git.txt, branch v2.32.2

Merge branch 'ps/config-global-override'

2021-05-07T03:47:39Z

Replace GIT_CONFIG_NOSYSTEM mechanism to decline from reading the system-wide configuration file with GIT_CONFIG_SYSTEM that lets users specify from which file to read the system-wide configuration (setting it to an empty file would essentially be the same as setting NOSYSTEM), and introduce GIT_CONFIG_GLOBAL to override the per-user configuration in $HOME/.gitconfig. * ps/config-global-override: t1300: fix unset of GIT_CONFIG_NOSYSTEM leaking into subsequent tests config: allow overriding of global and system configuration config: unify code paths to get global config paths config: rename `git_etc_config()`

Merge branch 'ps/config-env-option-with-separate-value'

2021-05-07T03:47:37Z

"git --config-env var=val cmd" weren't accepted (only --config-env=var=val was). * ps/config-env-option-with-separate-value: git: support separate arg for `--config-env`'s value git.txt: fix synopsis of `--config-env` missing the equals sign

git.txt: fix synopsis of `--config-env` missing the equals sign

2021-04-30T00:46:46Z

When executing `git -h`, then the `--config-env` documentation rightly lists the option as requiring an equals between the option and its argument: this is the only currently supported format. But the git(1) manpage incorrectly lists the option as taking a space in between. Fix the issue by adding the missing space. Reported-by: Ævar Arnfjörð Bjarmason Signed-of-by: Patrick Steinhardt Reviewed-by: Jeff King Signed-off-by: Junio C Hamano

config: allow overriding of global and system configuration

2021-04-19T21:16:59Z

In order to have git run in a fully controlled environment without any misconfiguration, it may be desirable for users or scripts to override global- and system-level configuration files. We already have a way of doing this, which is to unset both HOME and XDG_CONFIG_HOME environment variables and to set `GIT_CONFIG_NOGLOBAL=true`. This is quite kludgy, and unsetting the first two variables likely has an impact on other executables spawned by such a script. The obvious way to fix this would be to introduce `GIT_CONFIG_NOGLOBAL` as an equivalent to `GIT_CONFIG_NOSYSTEM`. But in the past, it has turned out that this design is inflexible: we cannot test system-level parsing of the git configuration in our test harness because there is no way to change its location, so all tests run with `GIT_CONFIG_NOSYSTEM` set. Instead of doing the same mistake with `GIT_CONFIG_NOGLOBAL`, introduce two new variables `GIT_CONFIG_GLOBAL` and `GIT_CONFIG_SYSTEM`: - If unset, git continues to use the usual locations. - If set to a specific path, we skip reading the normal configuration files and instead take the path. By setting the path to `/dev/null`, no configuration will be loaded for the respective level. This implements the usecase where we want to execute code in a sanitized environment without any potential misconfigurations via `/dev/null`, but is more flexible and allows for more usecases than simply adding `GIT_CONFIG_NOGLOBAL`. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano

git.txt: fix monospace rendering

2021-02-18T18:53:33Z

When we write ``s with the "s" tucked on to the closing backtick, we end up rendering the backticks literally. Rephrase this sentence slightly to render this as monospace. Signed-off-by: Martin Ågren Signed-off-by: Junio C Hamano

Merge branch 'ps/config-env-pairs'

2021-01-25T22:19:19Z

Introduce two new ways to feed configuration variable-value pairs via environment variables, and tweak the way GIT_CONFIG_PARAMETERS encodes variable/value pairs to make it more robust. * ps/config-env-pairs: config: allow specifying config entries via envvar pairs environment: make `getenv_safe()` a public function config: store "git -c" variables using more robust format config: parse more robust format in GIT_CONFIG_PARAMETERS config: extract function to parse config pairs quote: make sq_dequote_step() a public function config: add new way to pass config via `--config-env` git: add `--super-prefix` to usage string

config: add new way to pass config via `--config-env`

2021-01-12T20:03:18Z

While it's already possible to pass runtime configuration via `git -c =`, it may be undesirable to use when the value contains sensitive information. E.g. if one wants to set `http.extraHeader` to contain an authentication token, doing so via `-c` would trivially leak those credentials via e.g. ps(1), which typically also shows command arguments. To enable this usecase without leaking credentials, this commit introduces a new switch `--config-env==`. Instead of directly passing a value for the given key, it instead allows the user to specify the name of an environment variable. The value of that variable will then be used as value of the key. Co-authored-by: Jeff King Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano

git.txt: fix typos in 'linkgit' macro invocation

2020-12-22T20:02:29Z

The 'linkgit' Asciidoc macro is misspelled as 'linkit' in the description of 'GIT_SEQUENCE_EDITOR' since the addition of that variable to git(1) in 902a126eca (doc: mention GIT_SEQUENCE_EDITOR and 'sequence.editor' more, 2020-08-31). Also, it uses two colons instead of one. Fix that. Signed-off-by: Philippe Blain Signed-off-by: Junio C Hamano

refs: add GIT_TRACE_REFS debugging mechanism

2020-09-09T19:58:37Z

When set in the environment, GIT_TRACE_REFS makes git print operations and results as they flow through the ref storage backend. This helps debug discrepancies between different ref backends. Example: $ GIT_TRACE_REFS="1" ./git branch 15:42:09.769631 refs/debug.c:26 ref_store for .git 15:42:09.769681 refs/debug.c:249 read_raw_ref: HEAD: 0000000000000000000000000000000000000000 (=> refs/heads/ref-debug) type 1: 0 15:42:09.769695 refs/debug.c:249 read_raw_ref: refs/heads/ref-debug: 3a238e539bcdfe3f9eb5010fd218640c1b499f7a (=> refs/heads/ref-debug) type 0: 0 15:42:09.770282 refs/debug.c:233 ref_iterator_begin: refs/heads/ (0x1) 15:42:09.770290 refs/debug.c:189 iterator_advance: refs/heads/b4 (0) 15:42:09.770295 refs/debug.c:189 iterator_advance: refs/heads/branch3 (0) Signed-off-by: Han-Wen Nienhuys Signed-off-by: Junio C Hamano

Merge branch 'pb/doc-external-diff-env'

2020-09-03T19:37:09Z

Doc update. * pb/doc-external-diff-env: git.txt: correct stale 'GIT_EXTERNAL_DIFF' description