The unusual syntax --recurse-submodules="" (that is, --recurse-submodules with an empty string argument) has been an undocumented synonym of --recurse-submodules without an argument since commit 8f0700dd33 (fetch/pull: Add the 'on-demand' value to the --recurse-submodules option, 2011-03-06). Deprecate that syntax to avoid confusion with the submodule.recurse config option, where submodule.recurse="" is equivalent to --no-recurse-submodules. The same thing was done for --rebase-merges="" in commit 33561f5170 (rebase: deprecate --rebase-merges="", 2023-03-25). Signed-off-by: Alex Henrie <alexhenrie24@xxxxxxxxx> --- submodule-config.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/submodule-config.c b/submodule-config.c index 6a48fd12f6..8acb42744d 100644 --- a/submodule-config.c +++ b/submodule-config.c @@ -332,11 +332,17 @@ int option_fetch_parse_recurse_submodules(const struct option *opt, if (unset) { *v = RECURSE_SUBMODULES_OFF; + } else if (!arg) { + *v = RECURSE_SUBMODULES_ON; } else { - if (arg) - *v = parse_fetch_recurse_submodules_arg(opt->long_name, arg); - else - *v = RECURSE_SUBMODULES_ON; + if (!*arg) { + warning(_("--recurse-submodules with an empty string " + "argument is deprecated and will stop " + "working in a future version of Git. Use " + "--recurse-submodules without an argument " + "instead, which does the same thing.")); + } + *v = parse_fetch_recurse_submodules_arg(opt->long_name, arg); } return 0; } -- 2.41.0