Re^4: Making a regex case insensitive

[ikegami]

Nothing is modified, not even letters. Case is preserved.

>perl -le "'aA' =~ /(.*)/i && print $1
aA

Only the matching is affected. /i causes lower- and upper-case letters to match lower- and upper-case versions of itself.

Maybe you were thinking of

>perl -le "lc('aA') =~ /(.*)/ && print $1
aa