[PATCH] meson: regenerate config-list.h when Documentation changes

["D. Ben Knoble" <ben.knoble+github@gmail.com>]

The Meson-based build doesn't know when to rebuild config-list.h, so the
header is sometimes stale.

For example, an old build directory might have config-list.h from before
4173df5187 (submodule: introduce extensions.submodulePathConfig,
2026-01-12), which added submodule.<name>.gitdir to the list. Without
it, t9902-completion.sh fails. Regenerating the config-list.h artifact
from sources fixes the artifact and the test.

Teach the meson build to depend on the Documentation files that
generate-configlist.sh reads by having it use the output of
generate-configlist-deps.sh as a list of dependency files, since Meson
does not have (or want) builtin support for globbing like Make.

Signed-off-by: D. Ben Knoble <ben.knoble+github@gmail.com>
---

Notes (benknoble/commits):
    I considered having generate-configlist.sh write its own dependency
    list, which Meson also supports… idk though. Input welcome :)

 generate-configlist-deps.sh | 5 +++++
 meson.build                 | 1 +
 2 files changed, 6 insertions(+)
 create mode 100755 generate-configlist-deps.sh

diff --git a/generate-configlist-deps.sh b/generate-configlist-deps.sh
new file mode 100755
index 0000000000..a873e976b6
--- /dev/null
+++ b/generate-configlist-deps.sh
@@ -0,0 +1,5 @@
+#! /bin/sh
+
+printf '%s\n' \
+  "$MESON_SOURCE_ROOT"/Documentation/*config.adoc \
+  "$MESON_SOURCE_ROOT"/Documentation/config/*.adoc
diff --git a/meson.build b/meson.build
index 3a1d12caa4..4df7caa206 100644
--- a/meson.build
+++ b/meson.build
@@ -720,6 +720,7 @@ endif
 
 builtin_sources += custom_target(
   output: 'config-list.h',
+  depend_files: run_command(meson.current_source_dir() + '/generate-configlist-deps').stdout().strip().split('\n'),
   command: [
     shell,
     meson.current_source_dir() + '/generate-configlist.sh',
-- 
2.52.0.rc0.971.g305ecc6b61.dirty