mingw: fix mingw_open_append to work with named pipes

diff --git a/t/t0012-help.sh b/t/t0012-help.sh
index 060df24c2d99f433b0aa24288b93b108255a0afa..bc27df7f383d14fb5fea6266591469c32e562c4e 100755 (executable)
--- a/t/t0012-help.sh
+++ b/t/t0012-help.sh
@@ -66,6 +66,12 @@ test_expect_success 'git help' '
        test_i18ngrep "^   commit " help.output &&
        test_i18ngrep "^   fetch  " help.output
 '
+test_expect_success 'git help -g' '
+       git help -g >help.output &&
+       test_i18ngrep "^   attributes " help.output &&
+       test_i18ngrep "^   everyday   " help.output &&
+       test_i18ngrep "^   tutorial   " help.output
+'
 
 test_expect_success 'generate builtin list' '
        git --list-cmds=builtins >builtins