utf-8 encoding will "just work" (unless the gnu folk are
rearranging characters with the bucky bit set) or if
the result depends on knowing the width of a character,
e.g. in
a) a character class
b) matching a single character with ".".
for example for a file "fu" with these lines
α0
β0
α1
(no leading tab) i get these results with no
local settings at all.
; grep δ fu
δ0
works because as far as grep is concerned, the string
i asked for 03 b4 is in there. this works, too
; egrep '(ε|δ)0' fu
ε0
δ0
and this works because there is a character before
"0" on the line:
; egrep '.0' fu
ε0
δ0
but this doesn't
; egrep '[αβ]0' fu
; egrep '^.0' fu
this is for gnu grep version
; egrep --version
egrep (GNU grep) 2.5.1
- erik
