fix(env.c): drop envmap, free os_getenv() result #32683

Problem:
vim.uv.os_setenv gets "stuck" per-key. #32550
Caused by the internal `envmap` cache. #7920

    :echo $FOO  <-- prints nothing
    :lua vim.uv.os_setenv("FOO", "bar")
    :echo $FOO  <-- prints bar (as expected)
    :lua vim.uv.os_setenv("FOO", "fizz")
    :echo $FOO  <-- prints bar, still (not expected. Should be "fizz")
    :lua vim.uv.os_unsetenv("FOO")
    :echo $FOO  <-- prints bar, still (not expected. Should be nothing)
    :lua vim.uv.os_setenv("FOO", "buzz")
    :echo $FOO  <-- prints bar, still (not expected. Should be "buzz")

Solution:
- Remove the `envmap` cache.
  - Callers to `os_getenv` must free the result.
- Update all call-sites.
- Introduce `os_getenv_noalloc`.
- Extend `os_env_exists()` the `nonempty` parameter.
This commit is contained in:
Judit Novak
2025-04-16 12:36:07 +02:00
committed by GitHub
parent 7432781e71
commit fd973c0a4e
26 changed files with 281 additions and 146 deletions

View File

@@ -7810,8 +7810,8 @@ static void ex_checkhealth(exarg_T *eap)
return;
}
const char *vimruntime_env = os_getenv("VIMRUNTIME");
if (vimruntime_env == NULL) {
char *vimruntime_env = os_getenv_noalloc("VIMRUNTIME");
if (!vimruntime_env) {
emsg(_("E5009: $VIMRUNTIME is empty or unset"));
} else {
bool rtp_ok = NULL != strstr(p_rtp, vimruntime_env);