patch 8.2.2285: Vim9: cannot set an option to a false
Problem: Vim9: cannot set an option to a false.
Solution: For VAR_BOOL use string "0". (closes #7603)
diff --git a/src/evalvars.c b/src/evalvars.c
index 42b7ef5..c6b03e9 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -3509,10 +3509,16 @@
int error = FALSE;
if (varp->v_type == VAR_BOOL)
+ {
numval = (long)varp->vval.v_number;
- else if (!in_vim9script() || varp->v_type != VAR_STRING)
- numval = (long)tv_get_number_chk(varp, &error);
- strval = tv_get_string_buf_chk(varp, nbuf);
+ strval = (char_u *)"0"; // avoid using "false"
+ }
+ else
+ {
+ if (!in_vim9script() || varp->v_type != VAR_STRING)
+ numval = (long)tv_get_number_chk(varp, &error);
+ strval = tv_get_string_buf_chk(varp, nbuf);
+ }
if (!error && strval != NULL)
set_option_value(varname, numval, strval, OPT_LOCAL);
}