Provided by: redet_8.26-1.3_all bug


       redet - regular expression development and execution tool


       redet <options> [<input file>]


       redet allows the user to construct regular expressions and test them against input data by
       executing any of a variety of search programs, editors,  and  programming  languages  that
       make  use  of regular expressions. When a suitable regular expression has been constructed
       it may be saved to a file.

       Redet currently supports over fifty different programs and regular  expression  libraries.
       These  include  multiple  versions of grep, several editors (Ed, Emacs, Sed, Vim), all the
       popular scripting languages (Awk, Perl, Python, Ruby, Tcl)  and  some  less  popular  ones
       (Lua,  Pike,  Rebol),  most  shells  (Bash,  Ksh,  Tcsh, Zsh) and various other languages,
       including Guile, Icon and Java.

       For each program, a palette showing the available regular expression syntax  is  provided.
       Selections  from  the  palette may be copied to the regular expression window with a mouse
       click. Users may add their own definitions to the palette via their  initialization  file.
       Redet  also  keeps  a  list of the regular expressions executed, from which entries may be
       copied back into the regular expression under construction. The history list is saved to a
       file and restored on startup, so it persists across sessions.

       Redet provides both regular expression matching and substitution so long as the underlying
       program does.

       Although Redet is primarily an interface for other programs, it adds some features of  its
       own.   It  is  possible  to  define named character classes within Redet  and to intersect
       them. This allows provides a means of searching on feature matrices.

       So long as the underlying program supports Unicode, redet allows  UTF-8  Unicode  in  both
       test  data  and  regular expressions. Several tools provide additional support for Unicode
       use. These include popup lists of Unicode  ranges  and  general  character  properties,  a
       widget  for  entering  characters  by  their  numerical  code,  and  widgets  for entering
       International Phonetic Alphabet characters, widgets for entering letters with a variety of
       accents  and  other diacritics. Although internal operations are entirely in Unicode, test
       data, comparison data, and results may be read and written in any  encoding  supported  by
       Tcl/Tk.   Redet  is  fully internationalized. If a suitable message catalogue is provided,
       the interface may be made available in  any  language  and  writing  system  supported  by
       Unicode for which the necessary fonts are available.

       For usage information, execute redet with the command line flag -h.

       Full  information  about redet is available from the reference manual, which consists of a
       set     of     web     pages.      The      master      copy      is      located      at:    The  entry  Illustrated  Web
       Manual on the Help menu will take you to the master manual page.   The  manual  pages  are
       packaged with every copy of Redet.


       -c <file name>
              read character class definitions from the named file

       -d     set  the  debug  flag.   This  causes  additional  information to be printed during
              program execution.  It is mostly useful for developers.

       -F <filename>
              read a feature list from <filename>

       -f     act as a filter. This means that input is read from the standard input  and  output
              written to the standard output.

       -H     do not read the history file

       -h     print this help information

       -I <file>
              read <file> as the initialization file

       -i     do not read the initialization file

       -n     do not execute feature tests on startup

       -P     list the programs supported and indicate which are available

       -p <program>
              use the named program

       -s     start up in substitution mode

       -t     show the results of feature tests

       -v     print the program name and version, then exit


       awk (1), ed (1),grep (1), perl (1), sed (1)


       Bill Poser (


       GNU General Public License (, version 2.