patch 8.2.3650: Vim9: for loop variable can be a list member
Problem: Vim9: for loop variable can be a list member.
Solution: Check for valid variable name. (closes #9179)
diff --git a/src/evalvars.c b/src/evalvars.c
index afbab79..b560734 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -3431,7 +3431,7 @@
// Make sure the variable name is valid. In Vim9 script an autoload
// variable must be prefixed with "g:".
- if (!valid_varname(varname, !vim9script
+ if (!valid_varname(varname, -1, !vim9script
|| STRNCMP(name, "g:", 2) == 0))
goto failed;
@@ -3631,14 +3631,15 @@
/*
* Check if a variable name is valid. When "autoload" is true "#" is allowed.
+ * If "len" is -1 use all of "varname", otherwise up to "varname[len]".
* Return FALSE and give an error if not.
*/
int
-valid_varname(char_u *varname, int autoload)
+valid_varname(char_u *varname, int len, int autoload)
{
char_u *p;
- for (p = varname; *p != NUL; ++p)
+ for (p = varname; len < 0 ? *p != NUL : p < varname + len; ++p)
if (!eval_isnamec1(*p) && (p == varname || !VIM_ISDIGIT(*p))
&& !(autoload && *p == AUTOLOAD_CHAR))
{