Solved bug in lib/libc/regex/regex2.h

covacat

covacat

grep -i and egrep seem dog slow compared to 12.3-RELEASE
also slow compared with awk, php, tcl
sed is also slow
12.3
Code: 
+ time egrep 'Zyzzogeton|york' /usr/share/dict/web2
york
yorker
Zyzzogeton
        0.05 real         0.04 user         0.00 sys
+ time grep -i Zyzzogeton /usr/share/dict/web2
Zyzzogeton
        0.27 real         0.27 user         0.00 sys
+ time grep Zyzzogeton /usr/share/dict/web2
Zyzzogeton
        0.00 real         0.00 user         0.00 sys
13.0
Code: 
+ time egrep 'Zyzzogeton|york' /usr/share/dict/web2
york
yorker
Zyzzogeton
        0.66 real         0.66 user         0.00 sys
+ time grep -i Zyzzogeton /usr/share/dict/web2
Zyzzogeton
        0.58 real         0.58 user         0.00 sys
+ time grep Zyzzogeton /usr/share/dict/web2
Zyzzogeton
        0.01 real         0.00 user         0.00 sys
my theory is that
Code: 
 /usr/src/lib/libc/regex/regex2.h line 141
 if (cs->icase) {
                        if (ch == towlower(cs->wides[i]) ||
                            ch == towupper(cs->wides[i]))
                                return (!cs->invert);
                }
should be removed
the 2 boxes have about the same raw performance
 
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