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Fix soft hyphens not being preserved when round tripping text through the terminal

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Also roundtrip all characters in the Cf category.

Characters with the DI (Default Ignorable) property are now
preserved but not rendered and treated as zero-width
as per the unicode standard.
See https://www.unicode.org/faq/unsup_char.html
This commit is contained in:
Kovid Goyal
2021-10-07 10:26:57 +05:30
parent 1b42f69119
commit fbf47f75d5
10 changed files with 465 additions and 392 deletions
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6
kitty/unicode-data.h
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@@ -1,14 +1,16 @@
#pragma once
#include "data-types.h"
#include "state.h"
#define VS15 1320
#define VS16 1321
// START_KNOWN_MARKS
static const combining_type VS15 = 1325, VS16 = 1326;
// END_KNOWN_MARKS
bool is_combining_char(char_type ch);
bool is_ignored_char(char_type ch);
bool is_word_char(char_type ch);
bool is_CZ_category(char_type);
bool is_P_category(char_type);
bool is_non_rendered_char(char_type);
char_type codepoint_for_mark(combining_type m);
combining_type mark_for_codepoint(char_type c);