patch 9.0.1077: can add text property with negative ID before virtual text
Problem: Can add text property with negative ID before virtual text
property.
Solution: Remember that a text property with a negative ID was used and give
an appropriate error message. (closes #11725)
Fix index computation.
diff --git a/src/charset.c b/src/charset.c
index d9609f4..8d7b61a 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -1181,7 +1181,7 @@
? col == 0
: (s[0] == NUL || s[1] == NUL)
&& cts->cts_with_trailing)))
- && tp->tp_id - 1 < gap->ga_len)
+ && -tp->tp_id - 1 < gap->ga_len)
{
char_u *p = ((char_u **)gap->ga_data)[-tp->tp_id - 1];