diff options
| author | Alex Dowad <alexinbeijing@gmail.com> | 2020-09-19 16:26:04 +0200 |
|---|---|---|
| committer | Alex Dowad <alexinbeijing@gmail.com> | 2021-01-14 22:26:24 +0200 |
| commit | c11e12ffe001dd7f4a57c39a8ebd5de48a72cb42 (patch) | |
| tree | 7096961946e4dab342df36497cd5d3fff9168fe0 /ext/pcre/php_pcre.c | |
| parent | 4b95fdf2cac7269a38d035141e7321a295e19b29 (diff) | |
| download | php-git-c11e12ffe001dd7f4a57c39a8ebd5de48a72cb42.tar.gz | |
Add comment explaining why ISO-2022-JP-2004, etc strings end with ESC ( B
These encodings have multiple modes which can be selected via escape sequences.
The default starting mode is ASCII. If a string _ends_ in a different mode, we
emit a 'redundant' escape sequence to switch back to ASCII.
If the resulting string is never concatenated with other strings, that extra
escape sequence serves no purpose. But if the resulting string is concatenated
with other strings of the same encoding, it ensures that the resulting string
will be valid.
Diffstat (limited to 'ext/pcre/php_pcre.c')
0 files changed, 0 insertions, 0 deletions