Bill, A digit is just 0 to 9, per the definition of isdigit. Masking off the sign extension of the char value will just keep the values from 0 to 255 - UTF-8 sequences will have bit 7 set which will prevent isdigit from matching.
On Dec 7, 2011, at 11:09 PM, Bill Spitzak wrote: > On 10/18/2011 11:43 AM, Michael Sweet wrote: >> In this case I would not use strtol to skip digits, but a simple while loop >> instead: >> >> while (isdigit(*str& 255)) >> str ++; >> >> (the "& 255" part is necessary to avoid portability issues with UTF-8 >> strings) > > That seems wrong. That will actually turn some parts of UTF-8 characters > into digits and thus match. You actually do not want to change the > bytes, all the bytes in a multi-byte UTF-8 character will fail the > isdigit() test and thus this will stop at that point. > > _______________________________________________ > fltk-dev mailing list > fltk-dev@easysw.com > http://lists.easysw.com/mailman/listinfo/fltk-dev _____________ Michael Sweet _______________________________________________ fltk-dev mailing list fltk-dev@easysw.com http://lists.easysw.com/mailman/listinfo/fltk-dev
