patch 9.0.1897: Vim9: confusing error with .= in compiled functions
Problem: Vim9: confusing error with .= in compiled functions
Solution: Check in error condition, if .= was attempted and in that case
give a different error message.
closes: #12972
closes: #13066
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 7d24f21..cc4aa46 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -1669,7 +1669,14 @@
{
if (is_decl)
{
- semsg(_(e_variable_already_declared_str), lhs->lhs_name);
+ // if we come here with what looks like an assignment like .=
+ // but which has been reject by assignment_len() from may_compile_assignment
+ // give a better error message
+ char_u *p = skipwhite(lhs->lhs_end);
+ if (p[0] == '.' && p[1] == '=')
+ emsg(_(e_dot_equal_not_supported_with_script_version_two));
+ else
+ semsg(_(e_variable_already_declared_str), lhs->lhs_name);
return FAIL;
}
}