`git config` has long allowed the ability for callers to provide a 'type
specifier', which instructs `git config` to (1) ensure that incoming
values are satisfiable under that type, and (2) that outgoing values are
canonicalized under that type.
In another series, we propose to add extend this functionality with
`--color` and `--default` to replace `--get-color`.
However, we traditionally use `--color` to mean "colorize this output",
instead of "this value should be treated as a color".
Currently, `git config` does not support this kind of colorization, but
we should be careful to avoid inhabiting this option too soon, so that
`git config` can support `--color` (in the traditional sense) in the
future, if that is desired.
In this patch, we prefer `--type=[int|bool|bool-or-int|...]` over
`--int`, `--bool`, and etc. This allows the aforementioned other patch
to add `--color` (in the non-traditional sense) via `--type=color`,
instead of `--color`.
Signed-off-by: Taylor Blau <me@xxxxxxxxxxxx>
---
Documentation/git-config.txt | 66 +++++++++++++++++++-----------------
builtin/config.c | 25 ++++++++++++++
t/t1300-repo-config.sh | 21 ++++++++++++
3 files changed, 80 insertions(+), 32 deletions(-)
diff --git a/Documentation/git-config.txt b/Documentation/git-config.txt
index e09ed5d7d..a4a5ffb41 100644
--- a/Documentation/git-config.txt
+++ b/Documentation/git-config.txt
@@ -9,13 +9,13 @@ git-config - Get and set repository or global options
SYNOPSIS
--------
[verse]
-'git config' [<file-option>] [type] [--show-origin] [-z|--null] name [value [value_regex]]
-'git config' [<file-option>] [type] --add name value
-'git config' [<file-option>] [type] --replace-all name value [value_regex]
-'git config' [<file-option>] [type] [--show-origin] [-z|--null] --get name [value_regex]
-'git config' [<file-option>] [type] [--show-origin] [-z|--null] --get-all name [value_regex]
-'git config' [<file-option>] [type] [--show-origin] [-z|--null] [--name-only] --get-regexp name_regex [value_regex]
-'git config' [<file-option>] [type] [-z|--null] --get-urlmatch name URL
+'git config' [<file-option>] [--type] [--show-origin] [-z|--null] name [value [value_regex]]
+'git config' [<file-option>] [--type] --add name value
+'git config' [<file-option>] [--type] --replace-all name value [value_regex]
+'git config' [<file-option>] [--type] [--show-origin] [-z|--null] --get name [value_regex]
+'git config' [<file-option>] [--type] [--show-origin] [-z|--null] --get-all name [value_regex]
+'git config' [<file-option>] [--type] [--show-origin] [-z|--null] [--name-only] --get-regexp name_regex [value_regex]
+'git config' [<file-option>] [--type] [-z|--null] --get-urlmatch name URL
'git config' [<file-option>] --unset name [value_regex]
'git config' [<file-option>] --unset-all name [value_regex]
'git config' [<file-option>] --rename-section old_name new_name
@@ -38,12 +38,10 @@ existing values that match the regexp are updated or unset. If
you want to handle the lines that do *not* match the regex, just
prepend a single exclamation mark in front (see also <<EXAMPLES>>).
-The type specifier can be either `--int` or `--bool`, to make
-'git config' ensure that the variable(s) are of the given type and
-convert the value to the canonical form (simple decimal number for int,
-a "true" or "false" string for bool), or `--path`, which does some
-path expansion (see `--path` below). If no type specifier is passed, no
-checks or transformations are performed on the value.
+A type specifier may be given as an argument to `--type` to make 'git config'
+ensure that the variable(s) are of the given type and convert the value to the
+canonical form. If no type specifier is passed, no checks or transformations are
+performed on the value.
When reading, the values are read from the system, global and
repository local configuration files by default, and options
@@ -160,30 +158,34 @@ See also <<FILES>>.
--list::
List all variables set in config file, along with their values.
---bool::
- 'git config' will ensure that the output is "true" or "false"
+--type [type]::
+ 'git config' will ensure that any input output is valid under the given type
+ constraint(s), and will canonicalize outgoing values in `[type]`'s canonical
+ form.
++
+Valid `[type]`'s include:
++
+- 'bool': canonicalize values as either "true" or "false".
+- 'int': canonicalize values as simple decimla numbers. An optional suffix of
+ 'k', 'm', or 'g' will cause the value to be multiplied by 1024, 1048576, or
+ 1073741824 prior to output.
+- 'bool-or-int': canonicalize according to either 'bool' or 'int', as described
+ above.
+- 'path': canonicalize by adding a leading `~` to the value of `$HOME` and
+ `~user` to the home directory for the specified user. This specifier has no
+ effect when setting the value (but you can use `git config section.variable
+ ~/` from the command line to let your shell do the expansion.)
+- 'expiry-date': canonicalize by converting from a fixed or relative ate-string
+ to a timestamp. This specifier has no effect when setting the value.
++
+--bool::
--int::
- 'git config' will ensure that the output is a simple
- decimal number. An optional value suffix of 'k', 'm', or 'g'
- in the config file will cause the value to be multiplied
- by 1024, 1048576, or 1073741824 prior to output.
-
--bool-or-int::
- 'git config' will ensure that the output matches the format of
- either --bool or --int, as described above.
-
--path::
- `git config` will expand a leading `~` to the value of
- `$HOME`, and `~user` to the home directory for the
- specified user. This option has no effect when setting the
- value (but you can use `git config section.variable ~/`
- from the command line to let your shell do the expansion).
-
--expiry-date::
- `git config` will ensure that the output is converted from
- a fixed or relative date-string to a timestamp. This option
- has no effect when setting the value.
+ Historical options for selecting a type specifier. Prefer instead `--type`,
+ (see: above).
-z::
--null::
diff --git a/builtin/config.c b/builtin/config.c
index 01169dd62..ea7923493 100644
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -26,6 +26,7 @@ static char term = '\n';
static int use_global_config, use_system_config, use_local_config;
static struct git_config_source given_config_source;
static int actions, types;
+static char *type;
static int end_null;
static int respect_includes_opt = -1;
static struct config_options config_options;
@@ -84,6 +85,7 @@ static struct option builtin_config_options[] = {
OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
OPT_GROUP(N_("Type")),
+ OPT_STRING('t', "type", &type, N_("type"), N_("value is given this type")),
OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
@@ -493,6 +495,21 @@ static char *default_user_config(void)
return strbuf_detach(&buf, NULL);
}
+static int type_name_to_specifier(char *name)
+{
+ if (!(strcmp(name, "bool")))
+ return TYPE_BOOL;
+ else if (!(strcmp(name, "int")))
+ return TYPE_INT;
+ else if (!(strcmp(name, "bool-or-int")))
+ return TYPE_BOOL_OR_INT;
+ else if (!(strcmp(name, "path")))
+ return TYPE_PATH;
+ else if (!(strcmp(name, "expiry-date")))
+ return TYPE_EXPIRY_DATE;
+ die(_("unexpected --type argument, %s"), name);
+}
+
int cmd_config(int argc, const char **argv, const char *prefix)
{
int nongit = !startup_info->have_repository;
@@ -601,6 +618,14 @@ int cmd_config(int argc, const char **argv, const char *prefix)
usage_with_options(builtin_config_usage, builtin_config_options);
}
+ if (type) {
+ if (types != 0) {
+ error("usage of --type is ambiguous");
+ usage_with_options(builtin_config_usage, builtin_config_options);
+ }
+ types = type_name_to_specifier(type);
+ }
+
if (actions & PAGING_ACTIONS)
setup_auto_pager("config", 1);
diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 4f8e6f5fd..12dc94bd2 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -1611,4 +1611,25 @@ test_expect_success '--local requires a repo' '
test_expect_code 128 nongit git config --local foo.bar
'
+cat >.git/config <<-\EOF &&
+[core]
+foo = true
+EOF
+
+test_expect_success '--type allows valid type specifiers' '
+ echo "true" >expect &&
+ git config --type=bool core.foo >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success '--type rejects unknown specifiers' '
+ test_must_fail git config --type=nonsense core.foo 2>error &&
+ test_i18ngrep "unexpected --type argument" error
+'
+
+test_expect_success '--type does not allow for ambiguity' '
+ test_must_fail git config --type=bool --bool core.foo 2>error &&
+ test_i18ngrep "usage of --type is ambiguous" error
+'
+
test_done
--
2.16.2.440.gc6284da4f
