(coreutils.info.gz) Charset selection in ptx

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(coreutils.info.gz) Input processing in ptx

 
 7.5.2 Charset selection
 -----------------------
 
 As it is set up now, the program assumes that the input file is coded
 using 8-bit ISO 8859-1 code, also known as Latin-1 character set,
 _unless_ it is compiled for MS-DOS, in which case it uses the character
 set of the IBM-PC.  (GNU 'ptx' is not known to work on smaller MS-DOS
 machines anymore.)  Compared to 7-bit ASCII, the set of characters which
 are letters is different; this alters the behavior of regular expression
 matching.  Thus, the default regular expression for a keyword allows
 foreign or diacriticized letters.  Keyword sorting, however, is still
 crude; it obeys the underlying character set ordering quite blindly.
 
 '-f'
 '--ignore-case'
      Fold lower case letters to upper case for sorting.
 

Info Catalog

(coreutils.info.gz) General options in ptx

(coreutils.info.gz) ptx invocation

(coreutils.info.gz) Input processing in ptx