I'm sure that this is documented somewhere but I've ransacked the wiki and I can't find it. 
What are the allowed characters in an ikiwiki page name? I'm writing a simple script to make updating my blog easier and need to filter invalid characters (so far I've found that # and , aren't allowed ;-)). Thanks for any pointers. -- AdamShand
The default
wiki_file_regexpmatches filenames containing only[-[:alnum:]_.:/+]The titlepage() function will convert freeform text to a valid page name. See should use a standard encoding for utf chars in filenames for an example. --Joey
Perfect, thanks!
In the end I decided that I didn't need any special characters in filenames and replaced everything but alphanumeric characters with underscores. In addition to replacing bad characters I also collapse multiple underscores into a single one, and strip off trailing and leading underscores to make tidy filenames. If it's useful to anybody else here's a sed example:
# echo "++ Bad: ~@#$%^&*()_=}{[];,? Iki: +_-:./ Num: 65.5 ++" | sed -e 's/[^A-Za-z0-9_]/_/g' -e 's/__*/_/g' -e 's/^_//g' -e 's/_$//g' Bad_Iki_Num_65_5