Unicode input: Make diamond a synonym for gem

Fixes #3437

gen-wcwidth.py

@@ -114,6 +114,7 @@ def parse_ucd() -> None:
     word_search_map['bee'] |= word_search_map['honeybee']
     word_search_map['lambda'] |= word_search_map['lamda']
     word_search_map['lamda'] |= word_search_map['lambda']
+    word_search_map['diamond'] |= word_search_map['gem']
 
 
 def parse_range_spec(spec: str) -> Set[int]:

kitty/emoji.h

@@ -1,4 +1,4 @@
-// unicode data, built from the unicode standard on: 2020-09-22
+// unicode data, built from the unicode standard on: 2021-04-02
 // see gen-wcwidth.py
 #pragma once
 #include "data-types.h"

kitty/unicode-data.c

@@ -1,4 +1,4 @@
-// unicode data, built from the unicode standard on: 2020-09-22
+// unicode data, built from the unicode standard on: 2021-04-02
 // see gen-wcwidth.py
 #include "data-types.h"
 

kitty/wcwidth-std.h

@@ -1,4 +1,4 @@
-// unicode data, built from the unicode standard on: 2020-09-22
+// unicode data, built from the unicode standard on: 2021-04-02
 // see gen-wcwidth.py
 #pragma once
 #include "data-types.h"