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getenv: return NULL if empty #2574

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Making an environment variable empty can be a way of unsetting it for
platforms that don't support unsetenv(). In most cases, we treat empty
variables as having been unset. For all others, use os_env_exists().
This commit is contained in:
Scott Prager
2015-05-03 09:25:53 -04:00
parent fa0f122221
commit 412d246be7
10 changed files with 67 additions and 60 deletions
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6
src/nvim/main.c
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@@ -1889,8 +1889,8 @@ static void main_start_gui(void)
/// OK otherwise.
static int process_env(char *env, bool is_viminit)
{
char *initstr = (char *)os_getenv(env);
if (initstr != NULL && *initstr != NUL) {
const char *initstr = os_getenv(env);
if (initstr != NULL) {
if (is_viminit) {
vimrc_found(NULL, NULL);
}
@@ -1900,7 +1900,7 @@ static int process_env(char *env, bool is_viminit)
sourcing_lnum = 0;
scid_T save_sid = current_SID;
current_SID = SID_ENV;
do_cmdline_cmd(initstr);
do_cmdline_cmd((char *)initstr);
sourcing_name = save_sourcing_name;
sourcing_lnum = save_sourcing_lnum;
current_SID = save_sid;;