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.
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
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:
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.