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patch 8.2.4530: making comparison with null work changes legacy behavior

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Problem:    Making comparison with null work changes legacy behavior.
Solution:   Only use the better comparison in Vim9 script. (closes #9910)
This commit is contained in:
Bram Moolenaar
2022-03-09 11:56:21 +00:00
parent 1588bc8ebe
commit f3507a517c
3 changed files with 38 additions and 1 deletions
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5
src/typval.c
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@@ -1381,7 +1381,7 @@ typval_compare_list(
}
/*
* Compare v:null/v:none with another type. Return TRUE if the value is NULL.
* Compare v:null with another type. Return TRUE if the value is NULL.
*/
int
typval_compare_null(typval_T *tv1, typval_T *tv2)
@@ -1417,6 +1417,9 @@ typval_compare_null(typval_T *tv1, typval_T *tv2)
default: break;
}
}
if (!in_vim9script())
return FALSE; // backwards compatible
semsg(_(e_cannot_compare_str_with_str),
vartype_name(tv1->v_type), vartype_name(tv2->v_type));
return MAYBE;