diff options
Diffstat (limited to 'src/fl_utf8.cxx')
| -rw-r--r-- | src/fl_utf8.cxx | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/fl_utf8.cxx b/src/fl_utf8.cxx index 62d393094..7ba8102a5 100644 --- a/src/fl_utf8.cxx +++ b/src/fl_utf8.cxx @@ -1638,11 +1638,15 @@ unsigned fl_utf8from_mb(char* dst, unsigned dstlen, const char* src, unsigned sr /** Returns pointer to beginning of character after given location in UTF8 string accounting for emoji sequences. - Unicode encodes some emojis (examples: π©ββοΈ "woman pilot", πΈπ² "San Marino flag", 9οΈβ£ "keycap 9") - via an <b>emoji sequence</b>, that is, they are represented by sequences of consecutive unicode points. - An emoji sequence may pair two successive codepoints with "zero-width joiner" and may qualify - any component with "variation selectors" or "Fitzpatrick emoji modifiers". Most flag emojis are encoded with two successive - "regional indicator symbols". Keycap emojis are encoded with key + "emoji variation selector" + "combining enclosing keycap". + While Unicode encodes most characters as a single codepoint, some emojis (examples: π©ββοΈ "woman pilot", + πΈπ² "San Marino flag", 9οΈβ£ "keycap 9") are encoded via an <b>emoji sequence</b>, that is, they are + represented by sequences of consecutive Unicode points. An emoji sequence may pair two codepoints with + "zero-width joiner" and may qualify any component with "variation selectors" or "Fitzpatrick emoji modifiers". + Most flag emojis are encoded with two consecutive "regional indicator symbols". Keycap emojis are encoded + with key + "emoji variation selector" + "combining enclosing keycap". + + Use this function to advance to the next character within a UTF8 string processing an entire emoji sequence + if present as a single character. \param from points to a location within a UTF8 string. If this location is inside the UTF8 encoding of a codepoint or is an invalid byte, this function returns \p from + 1. \param end points past last codepoint of the string. @@ -1689,6 +1693,8 @@ const char *fl_utf8_next_composed_char(const char *from, const char *end) { /** Returns pointer to beginning of character before given location in UTF8 string accounting for emoji sequences. See fl_utf8_next_composed_char() for a hint about what is an emoji sequence. + Use this function to step back to the previous character within a UTF8 string processing an entire emoji sequence + if present as a single character. \param from points to a location within a UTF8 string. If this location is inside the UTF8 encoding of a codepoint or is an invalid byte, this function returns \p from - 1. \param begin points to start of first codepoint of the string. |