repo: add path.toplevel with absolute and relative suffix formatting

Scripts frequently need to find the root directory of a repository's working tree. Currently, this requires using `git rev-parse --show-toplevel` or inferring it from other path components. Introduce `path.toplevel.absolute` and `path.toplevel.relative` keys to `git repo info`. This allows scripts to retrieve the top-level working tree path in a predictable, strictly formatted manner without relying on `rev-parse`. If requested in a bare repository where no working tree exists, the command returns an empty string. Mentored-by: Justin Tobler <jltobler@gmail.com> Mentored-by: Lucas Seiki Oshiro <lucasseikioshiro@gmail.com> Signed-off-by: K Jayatheerth <jayatheerthkulkarni2005@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

K Jayatheerth committed Jul 26, 2026 at 16:13 UTC 4f4f0e15d62a5f0a571d27e98c4a04abc28b9479
3 files changed +68
Documentation/git-repo.adoc
+10
@@ -119,6 +119,16 @@ values that they return:
119 `path.gitdir.relative`::
120 The path to the Git repository directory relative to the current working directory.
121
122 +`path.toplevel.absolute`::
123 + The canonical absolute path to the top-level directory of the
124 + repository's working tree. Outputs an empty string if the repository
125 + is bare.
126 +
127 +`path.toplevel.relative`::
128 + The path to the top-level directory of the repository's working
129 + tree relative to the current working directory. Outputs an empty
130 + string if the repository is bare.
131 +
132 `references.format`::
133 The reference storage format. The valid values are:
134 +
builtin/repo.c
+28
@@ -121,6 +121,32 @@ static int get_path_gitdir_relative(struct repository *repo, struct strbuf *buf)
121 return 0;
122 }
123
124 +static int get_path_toplevel_absolute(struct repository *repo, struct strbuf *buf)
125 +{
126 + const char *work_tree = repo_get_work_tree(repo);
127 +
128 + if (!work_tree) {
129 + strbuf_addstr(buf, "");
130 + return 0;
131 + }
132 +
133 + format_path(buf, work_tree, startup_info->prefix, PATH_FORMAT_CANONICAL);
134 + return 0;
135 +}
136 +
137 +static int get_path_toplevel_relative(struct repository *repo, struct strbuf *buf)
138 +{
139 + const char *work_tree = repo_get_work_tree(repo);
140 +
141 + if (!work_tree) {
142 + strbuf_addstr(buf, "");
143 + return 0;
144 + }
145 +
146 + format_path(buf, work_tree, startup_info->prefix, PATH_FORMAT_RELATIVE);
147 + return 0;
148 +}
149 +
150 static int get_references_format(struct repository *repo, struct strbuf *buf)
151 {
152 strbuf_addstr(buf,
@@ -137,6 +163,8 @@ static const struct repo_info_field repo_info_field[] = {
163 { "path.commondir.relative", get_path_commondir_relative },
164 { "path.gitdir.absolute", get_path_gitdir_absolute },
165 { "path.gitdir.relative", get_path_gitdir_relative },
166 + { "path.toplevel.absolute", get_path_toplevel_absolute },
167 + { "path.toplevel.relative", get_path_toplevel_relative },
168 { "references.format", get_references_format },
169 };
170
t/t1900-repo-info.sh
+30
@@ -213,4 +213,34 @@ test_repo_info_path 'gitdir with explicit GIT_DIR' 'gitdir' \
213 '.git' \
214 'GIT_DIR="../.git" && export GIT_DIR'
215
216 +test_expect_success 'path.toplevel absolute and relative' '
217 + test_when_finished "rm -rf repo" &&
218 + git init repo &&
219 + (
220 + mkdir -p repo/sub &&
221 + cd repo/sub &&
222 +
223 + ROOT="$(test-tool path-utils real_path ..)" &&
224 +
225 + echo "path.toplevel.absolute=$ROOT" >expect.abs &&
226 + git repo info path.toplevel.absolute >actual.abs &&
227 + test_cmp expect.abs actual.abs &&
228 +
229 + echo "path.toplevel.relative=../" >expect.rel &&
230 + git repo info path.toplevel.relative >actual.rel &&
231 + test_cmp expect.rel actual.rel
232 + )
233 +'
234 +
235 +test_expect_success 'path.toplevel returns empty in a bare repository' '
236 + test_when_finished "rm -rf bare.git" &&
237 + git init --bare bare.git &&
238 + (
239 + cd bare.git &&
240 + echo "path.toplevel.absolute=" >expect &&
241 + git repo info path.toplevel.absolute >actual &&
242 + test_cmp expect actual
243 + )
244 +'
245 +
246 test_done