0d1f6a54f
Denys Vlasenko
2025-08-14
Subject
hush: allow faster parsing for "./:@" characters
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shell/hush.c+7 -2
| @@ -5605,8 +5605,13 @@ static struct pipe *parse_stream(char **pstring, | |
| debug_printf_parse(": ch:%c (%d) globprotect:%d\n", | |
| ch, ch, !!(ctx.word.o_expflags & EXP_FLAG_GLOBPROTECT_CHARS)); | |
| # if ENABLE_HUSH_NEED_FOR_SPEED | |
| - | if (isalnum(ch)) { |
| - | /* 0-9A-Za-z are never special and just go into the current word */ |
| + | if ((ch >= '.' && ch <= ':') /* ASCII "./0123456789:" */ |
| + | /* can't include preceding "+,-" above: "-" needs glob-escaping (example?) */ |
| + | || (ch >= '@' && ch <= 'Z') /* ASCII "@A..Z" */ |
| + | || (ch >= 'a' && ch <= 'z') /* ASCII "a..Z" */ |
| + | /* can't include preceding "^_`" above because of "`". Pity. "_" is relatively common */ |
| + | ) { |
| + | /* These are never special and just go into the current word */ |
| /* ~5% faster parsing of typical shell scripts */ | |
| INLINED_o_addchr(&ctx.word, ch); | |
| continue; | |