be relative to the configuration file in which the include directive
was found. See below for examples.
+Conditional includes
+~~~~~~~~~~~~~~~~~~~~
+
+You can include a config file from another conditionally by setting a
+`includeIf.<condition>.path` variable to the name of the file to be
+included. The variable's value is treated the same way as
+`include.path`. `includeIf.<condition>.path` can be given multiple times.
+
+The condition starts with a keyword followed by a colon and some data
+whose format and meaning depends on the keyword. Supported keywords
+are:
+
+`gitdir`::
+
+ The data that follows the keyword `gitdir:` is used as a glob
+ pattern. If the location of the .git directory matches the
+ pattern, the include condition is met.
++
+The .git location may be auto-discovered, or come from `$GIT_DIR`
+environment variable. If the repository is auto discovered via a .git
+file (e.g. from submodules, or a linked worktree), the .git location
+would be the final location where the .git directory is, not where the
+.git file is.
++
+The pattern can contain standard globbing wildcards and two additional
+ones, `**/` and `/**`, that can match multiple path components. Please
+refer to linkgit:gitignore[5] for details. For convenience:
+
+ * If the pattern starts with `~/`, `~` will be substituted with the
+ content of the environment variable `HOME`.
+
+ * If the pattern starts with `./`, it is replaced with the directory
+ containing the current config file.
+
+ * If the pattern does not start with either `~/`, `./` or `/`, `**/`
+ will be automatically prepended. For example, the pattern `foo/bar`
+ becomes `**/foo/bar` and would match `/any/path/to/foo/bar`.
+
+ * If the pattern ends with `/`, `**` will be automatically added. For
+ example, the pattern `foo/` becomes `foo/**`. In other words, it
+ matches "foo" and everything inside, recursively.
+
+`gitdir/i`::
+ This is the same as `gitdir` except that matching is done
+ case-insensitively (e.g. on case-insensitive file sytems)
+
+A few more notes on matching via `gitdir` and `gitdir/i`:
+
+ * Symlinks in `$GIT_DIR` are not resolved before matching.
+
+ * Note that "../" is not special and will match literally, which is
+ unlikely what you want.
Example
~~~~~~~
path = foo ; expand "foo" relative to the current file
path = ~/foo ; expand "foo" in your `$HOME` directory
+ ; include if $GIT_DIR is /path/to/foo/.git
+ [includeIf "gitdir:/path/to/foo/.git"]
+ path = /path/to/foo.inc
+
+ ; include for all repositories inside /path/to/group
+ [includeIf "gitdir:/path/to/group/"]
+ path = /path/to/foo.inc
+
+ ; include for all repositories inside $HOME/to/group
+ [includeIf "gitdir:~/to/group/"]
+ path = /path/to/foo.inc
Values
~~~~~~
#include "hashmap.h"
#include "string-list.h"
#include "utf8.h"
+#include "dir.h"
struct config_source {
struct config_source *prev;
return ret;
}
+static int prepare_include_condition_pattern(struct strbuf *pat)
+{
+ struct strbuf path = STRBUF_INIT;
+ char *expanded;
+ int prefix = 0;
+
+ expanded = expand_user_path(pat->buf);
+ if (expanded) {
+ strbuf_reset(pat);
+ strbuf_addstr(pat, expanded);
+ free(expanded);
+ }
+
+ if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
+ const char *slash;
+
+ if (!cf || !cf->path)
+ return error(_("relative config include "
+ "conditionals must come from files"));
+
+ strbuf_add_absolute_path(&path, cf->path);
+ slash = find_last_dir_sep(path.buf);
+ if (!slash)
+ die("BUG: how is this possible?");
+ strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
+ prefix = slash - path.buf + 1 /* slash */;
+ } else if (!is_absolute_path(pat->buf))
+ strbuf_insert(pat, 0, "**/", 3);
+
+ if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
+ strbuf_addstr(pat, "**");
+
+ strbuf_release(&path);
+ return prefix;
+}
+
+static int include_by_gitdir(const char *cond, size_t cond_len, int icase)
+{
+ struct strbuf text = STRBUF_INIT;
+ struct strbuf pattern = STRBUF_INIT;
+ int ret = 0, prefix;
+
+ strbuf_add_absolute_path(&text, get_git_dir());
+ strbuf_add(&pattern, cond, cond_len);
+ prefix = prepare_include_condition_pattern(&pattern);
+
+ if (prefix < 0)
+ goto done;
+
+ if (prefix > 0) {
+ /*
+ * perform literal matching on the prefix part so that
+ * any wildcard character in it can't create side effects.
+ */
+ if (text.len < prefix)
+ goto done;
+ if (!icase && strncmp(pattern.buf, text.buf, prefix))
+ goto done;
+ if (icase && strncasecmp(pattern.buf, text.buf, prefix))
+ goto done;
+ }
+
+ ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
+ icase ? WM_CASEFOLD : 0, NULL);
+
+done:
+ strbuf_release(&pattern);
+ strbuf_release(&text);
+ return ret;
+}
+
+static int include_condition_is_true(const char *cond, size_t cond_len)
+{
+
+ if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
+ return include_by_gitdir(cond, cond_len, 0);
+ else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
+ return include_by_gitdir(cond, cond_len, 1);
+
+ /* unknown conditionals are always false */
+ return 0;
+}
+
int git_config_include(const char *var, const char *value, void *data)
{
struct config_include_data *inc = data;
+ const char *cond, *key;
+ int cond_len;
int ret;
/*
if (!strcmp(var, "include.path"))
ret = handle_path_include(value, inc);
+
+ if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
+ (cond && include_condition_is_true(cond, cond_len)) &&
+ !strcmp(key, "path"))
+ ret = handle_path_include(value, inc);
+
return ret;
}
test_expect_success 'missing include files are ignored' '
cat >.gitconfig <<-\EOF &&
- [include]path = foo
+ [include]path = non-existent
[test]value = yes
EOF
echo yes >expect &&
test_must_fail git config --file - test.one
'
+test_expect_success 'conditional include, both unanchored' '
+ git init foo &&
+ (
+ cd foo &&
+ echo "[includeIf \"gitdir:foo/\"]path=bar" >>.git/config &&
+ echo "[test]one=1" >.git/bar &&
+ echo 1 >expect &&
+ git config test.one >actual &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'conditional include, $HOME expansion' '
+ (
+ cd foo &&
+ echo "[includeIf \"gitdir:~/foo/\"]path=bar2" >>.git/config &&
+ echo "[test]two=2" >.git/bar2 &&
+ echo 2 >expect &&
+ git config test.two >actual &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'conditional include, full pattern' '
+ (
+ cd foo &&
+ echo "[includeIf \"gitdir:**/foo/**\"]path=bar3" >>.git/config &&
+ echo "[test]three=3" >.git/bar3 &&
+ echo 3 >expect &&
+ git config test.three >actual &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'conditional include, relative path' '
+ echo "[includeIf \"gitdir:./foo/.git\"]path=bar4" >>.gitconfig &&
+ echo "[test]four=4" >bar4 &&
+ (
+ cd foo &&
+ echo 4 >expect &&
+ git config test.four >actual &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'conditional include, both unanchored, icase' '
+ (
+ cd foo &&
+ echo "[includeIf \"gitdir/i:FOO/\"]path=bar5" >>.git/config &&
+ echo "[test]five=5" >.git/bar5 &&
+ echo 5 >expect &&
+ git config test.five >actual &&
+ test_cmp expect actual
+ )
+'
+
test_expect_success 'include cycles are detected' '
cat >.gitconfig <<-\EOF &&
[test]value = gitconfig