As I am working on the last issues for my new Oddmuse release, I’ve stumbled upon a strange problem using grep scenario on Mac OS 10.6.8:
$ mkdir /tmp/dir $ echo schroeder > /tmp/dir/schroeder $ echo schröder > /tmp/dir/schröder $ echo SCHRÖDER > /tmp/dir/SCHRÖDER-UP # don't use SCHRÖDER because of HFS $ grep -rli schröder /tmp/dir /tmp/dir/schröder $ grep -rli SCHRÖDER /tmp/dir /tmp/dir/schröder
Why is grep not finding the upper case variant in the *Schröder-Up* file?
$ cat /tmp/dir/schröder | od -c 0000000 s c h r ö ** d e r \n 0000012 $ cat /tmp/dir/SCHRÖDER-UP | od -c 0000000 S C H R Ö ** D E R \n 0000012
Maybe related in a weird way: HFS uses Normalization Form D. I’ll try on my new Debian system.
#OSX #grep