patch 8.0.0985: libvterm has its own idea of character width
Problem: Libvterm has its own idea of character width.
Solution: Use the Vim functions for character width and composing to avoid a
mismatch. (idea by Yasuhiro Matsumoto)
diff --git a/src/proto/mbyte.pro b/src/proto/mbyte.pro
index 83bcadc..b37064b 100644
--- a/src/proto/mbyte.pro
+++ b/src/proto/mbyte.pro
@@ -10,6 +10,7 @@
int latin_char2bytes(int c, char_u *buf);
int latin_ptr2len(char_u *p);
int latin_ptr2len_len(char_u *p, int size);
+int utf_uint2cells(uint32_t c);
int utf_char2cells(int c);
int latin_ptr2cells(char_u *p);
int utf_ptr2cells(char_u *p);
@@ -37,6 +38,7 @@
int utfc_ptr2len_len(char_u *p, int size);
int utf_char2len(int c);
int utf_char2bytes(int c, char_u *buf);
+int utf_iscomposing_uint(uint32_t c);
int utf_iscomposing(int c);
int utf_printable(int c);
int utf_class(int c);