Thoughts regular expressions in, for example sed

[Johnny Rosenberg]

I don't know if regular expressions are used the same way in all those
nice tools, like sed, grep and whatever, but I can't stop wondering
why the regular expression syntax is so inconsistent.

Some characters are used for things, so if I want to search for them I
need to escape them, for example ”.\[]{}”, but what about ()? They are
the other way around: I have to escape them when I want to use them!
Why is this?


Johnny Rosenberg