[MPlayer-users] ad_faad.c compile error

Moritz Bunkus moritz at bunkus.org
Sat Feb 8 02:16:53 CET 2003


> > echo 1.1 | sed -e 's/^\([0-9]+\)\.\([0-9]+\).*/\1\2/'

After some hints from the local Unix gurus I now know why this breaks:
sed uses BREs (basic regular expressions, see man 7 regex) which simply
do not know the + operator. awk uses ERE (extended RE), and the most
powerful are the PRE (Perl RE).

On the other hand: Note that version numbers which have two digits
subversion will break comparison ;) 1.10 --> 110 > 21 = 2.1 :)

 ==> Ciao, Mosu (Moritz Bunkus)

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