shithub: riscv

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ref: 4d0a446123daebf8d9de77f5359e49229fe1eeb8
parent: cde97a4d5f17fe597cc55aa4653082bf2c01598c
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Sun Mar 30 00:29:04 EDT 2014

grep: fix wrong rlcass splitting (thanks erik and kenji)

add 0xffff to tab1 as range 0xffff-0x10ffff has 4 byte utf-8 sequence.
use Runemax (0x10ffff) instead of Runemask (0x1fffff) to denote
the last valid rune for inverted [^] match as Runemask is out of the
valid rune space.

--- a/sys/src/cmd/grep/comp.c

+++ b/sys/src/cmd/grep/comp.c

@@ -135,11 +135,13 @@

 {

 	0x007f,

 	0x07ff,

+	0xffff,

 };

 Rune	tab2[] =

 {

 	0x003f,

 	0x0fff,

+	0xffff,

 };

 Re2

@@ -275,7 +277,7 @@

 			x = re2or(x, rclass(ov, p[0]-1));

 			ov = p[1]+1;

 		}

-		x = re2or(x, rclass(ov, Runemask));

+		x = re2or(x, rclass(ov, Runemax));

 	} else {

 		x = rclass(p[0], p[1]);

 		for(p+=2; *p; p+=2)