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vim-patch:8.2.4754: using cached values after unsetting some environment variables (#19872)

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Problem:    Still using cached values after unsetting some known environment
            variables.
Solution:   Take care of the side effects. (closes vim/vim#10194)
7714231bb5

Cherry-pick vim_setenv_ext() from patch 8.2.0200.
This commit is contained in:
zeertzjq
2022-08-21 11:37:13 +08:00
committed by GitHub
parent 506a3ec913
commit 6b9852cc41
5 changed files with 54 additions and 17 deletions
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12
src/nvim/eval/vars.c
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@@ -593,15 +593,7 @@ static char *ex_let_one(char *arg, typval_T *const tv, const bool copy, const bo
}
}
if (p != NULL) {
os_setenv(name, p, 1);
if (STRICMP(name, "HOME") == 0) {
init_homedir();
} else if (didset_vim && STRICMP(name, "VIM") == 0) {
didset_vim = false;
} else if (didset_vimruntime
&& STRICMP(name, "VIMRUNTIME") == 0) {
didset_vimruntime = false;
}
vim_setenv_ext(name, p);
arg_end = arg;
}
name[len] = c1;
@@ -859,7 +851,7 @@ static int do_unlet_var(lval_T *lp, char *name_end, exarg_T *eap, int deep FUNC_
// Environment variable, normal name or expanded name.
if (*lp->ll_name == '$') {
os_unsetenv(lp->ll_name + 1);
vim_unsetenv_ext(lp->ll_name + 1);
} else if (do_unlet(lp->ll_name, lp->ll_name_len, forceit) == FAIL) {
ret = FAIL;
}