From 5812c2fb3534a9203cc110cc052fdae730920a3e Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 18 Feb 2015 12:32:17 +0000 Subject: [PATCH 38/N] Pass environment variables with empty values There is a difference between an empty value and an unset environment variable. We should not confuse both; If the user wants to unset an environment variable, they can certainly do so (unsetenv(3), or in the shell: 'unset ABC'). This fixes Git's t3301-notes.sh, which overrides environment variables with empty values. Signed-off-by: Johannes Schindelin --- winsup/cygwin/environ.cc | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/winsup/cygwin/environ.cc b/winsup/cygwin/environ.cc index 5afac8d..522d7d5 100644 --- a/winsup/cygwin/environ.cc +++ b/winsup/cygwin/environ.cc @@ -1339,11 +1339,11 @@ build_env (const char * const *envp, PWCHAR &envblock, int &envc, Note that this doesn't stop invalid strings without '=' in it etc., but we're opting for speed here for now. Adding complete checking would be pretty expensive. */ - if (len == 1 || !*rest) + if (len == 1) continue; /* See if this entry requires posix->win32 conversion. */ - conv = getwinenv (*srcp, rest, &temp); + conv = !*rest ? NULL : getwinenv (*srcp, rest, &temp); if (conv) { p = conv->native; /* Use win32 path */ @@ -1357,7 +1357,7 @@ build_env (const char * const *envp, PWCHAR &envblock, int &envc, } } #ifdef __MSYS__ - else if (!keep_posix) { + else if (!keep_posix && *rest) { char *win_arg = arg_heuristic_with_exclusions (*srcp, msys2_env_conv_excl_env, msys2_env_conv_excl_count); debug_printf("WIN32_PATH is %s", win_arg);