From 0ae5b5bd431d983b0d915684e8482dcd089d4d32 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Sat, 2 Apr 2016 13:05:08 +0200 Subject: [PATCH] mingw: support spawning programs containing spaces in their names On some older Windows versions (e.g. Windows 7), the CreateProcessW() function does not really support spaces in its first argument, lpApplicationName. But it supports passing NULL as lpApplicationName, which makes it figure out the application from the (possibly quoted) first argument of lpCommandLine. Let's use that trick (if we are certain that the first argument matches the executable's path) to support launching programs whose path contains spaces. We will abuse the test-fake-ssh.exe helper to verify that this works and does not regress. This fixes https://github.com/git-for-windows/git/issues/692 Signed-off-by: Johannes Schindelin --- compat/mingw.c | 8 +++++--- t/t0061-run-command.sh | 6 ++++++ 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/compat/mingw.c b/compat/mingw.c index b288737570..4c2e8a396f 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -1472,7 +1472,9 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaen si.hStdError = winansi_get_osfhandle(fherr); /* executables and the current directory don't support long paths */ - if (xutftowcs_path(wcmd, cmd) < 0) + if (*argv && !strcmp(cmd, *argv)) + wcmd[0] = L'\0'; + else if (xutftowcs_path(wcmd, cmd) < 0) return -1; if (dir && xutftowcs_path(wdir, dir) < 0) return -1; @@ -1501,8 +1503,8 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaen wenvblk = make_environment_block(deltaenv); memset(&pi, 0, sizeof(pi)); - ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags, - wenvblk, dir ? wdir : NULL, &si, &pi); + ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL, TRUE, + flags, wenvblk, dir ? wdir : NULL, &si, &pi); free(wenvblk); free(wargs); diff --git a/t/t0061-run-command.sh b/t/t0061-run-command.sh index ebc49561ac..015fac8b5d 100755 --- a/t/t0061-run-command.sh +++ b/t/t0061-run-command.sh @@ -210,4 +210,10 @@ test_expect_success MINGW 'verify curlies are quoted properly' ' test_cmp expect actual ' +test_expect_success MINGW 'can spawn with argv[0] containing spaces' ' + cp "$GIT_BUILD_DIR/t/helper/test-fake-ssh$X" ./ && + test_must_fail "$PWD/test-fake-ssh$X" 2>err && + grep TRASH_DIRECTORY err +' + test_done