Mercurial > vim
diff src/typval.c @ 28019:53e2bf6032e5 v8.2.4534
patch 8.2.4534: Vim9: "is" operator with empty string and null returns true
Commit: https://github.com/vim/vim/commit/f8691004b069f67becd657a02100d7521d1255a9
Author: Bram Moolenaar <Bram@vim.org>
Date: Thu Mar 10 12:20:53 2022 +0000
patch 8.2.4534: Vim9: "is" operator with empty string and null returns true
Problem: Vim9: "is" operator with empty string and null returns true.
Solution: Consider empty string and null to be different for "is".
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 10 Mar 2022 13:30:12 +0100 |
| parents | d10d5cc8e657 |
| children | 1615d305c71d |
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--- a/src/typval.c +++ b/src/typval.c @@ -1583,9 +1583,23 @@ typval_compare_string( i = ic ? MB_STRICMP(s1, s2) : STRCMP(s1, s2); switch (type) { - case EXPR_IS: + case EXPR_IS: if (in_vim9script()) + { + // Really check it is the same string, not just + // the same value. + val = tv1->vval.v_string == tv2->vval.v_string; + break; + } + // FALLTHROUGH case EXPR_EQUAL: val = (i == 0); break; - case EXPR_ISNOT: + case EXPR_ISNOT: if (in_vim9script()) + { + // Really check it is not the same string, not + // just a different value. + val = tv1->vval.v_string != tv2->vval.v_string; + break; + } + // FALLTHROUGH case EXPR_NEQUAL: val = (i != 0); break; case EXPR_GREATER: val = (i > 0); break; case EXPR_GEQUAL: val = (i >= 0); break;