1REDET(1) User Commands REDET(1)
2
6 redet - regular expression development and execution tool
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9 redet <options> [<input file>]
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12 redet allows the user to construct regular expressions and test them
13 against input data by executing any of a variety of search programs,
14 editors, and programming languages that make use of regular expres‐
15 sions. When a suitable regular expression has been constructed it may
16 be saved to a file.
17 Redet currently supports over fifty different programs and regular
19 expression libraries. These include multiple versions of grep, several
20 editors (Ed, Emacs, Sed, Vim), all the popular scripting languages
21 (Awk, Perl, Python, Ruby, Tcl) and some less popular ones (Lua, Pike,
22 Rebol), most shells (Bash, Ksh, Tcsh, Zsh) and various other languages,
23 including Guile, Icon and Java.
24 For each program, a palette showing the available regular expression
26 syntax is provided. Selections from the palette may be copied to the
27 regular expression window with a mouse click. Users may add their own
28 definitions to the palette via their initialization file. Redet also
29 keeps a list of the regular expressions executed, from which entries
30 may be copied back into the regular expression under construction. The
31 history list is saved to a file and restored on startup, so it persists
32 across sessions.
33 Redet provides both regular expression matching and substitution so
35 long as the underlying program does.
36 Although Redet is primarily an interface for other programs, it adds
38 some features of its own. It is possible to define named character
39 classes within Redet and to intersect them. This allows provides a
40 means of searching on feature matrices.
41 So long as the underlying program supports Unicode, redet allows UTF-8
43 Unicode in both test data and regular expressions. Several tools pro‐
44 vide additional support for Unicode use. These include popup lists of
45 Unicode ranges and general character properties, a widget for entering
46 characters by their numerical code, and widgets for entering Interna‐
47 tional Phonetic Alphabet characters, widgets for entering letters with
48 a variety of accents and other diacritics. Although internal operations
49 are entirely in Unicode, test data, comparison data, and results may be
50 read and written in any encoding supported by Tcl/Tk. Redet is fully
51 internationalized. If a suitable message catalogue is provided, the
52 interface may be made available in any language and writing system sup‐
53 ported by Unicode for which the necessary fonts are available.
54 For usage information, execute redet with the command line flag -h.
56 Full information about redet is available from the reference manual,
58 which consists of a set of web pages. The master copy is located at:
59 http://www.cis.upenn.edu/~wjposer/RedetManual/Manual.html. The entry
60 Illustrated Web Manual on the Help menu will take you to the master
61 manual page. The manual pages are packaged with every copy of Redet.
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65 -c <file name>
66 read character class definitions from the named file
67 -d set the debug flag. This causes additional information to be
69 printed during program execution. It is mostly useful for
70 developers.
71 -F <filename>
73 read a feature list from <filename>
74 -f act as a filter. This means that input is read from the standard
76 input and output written to the standard output.
77 -H do not read the history file
79 -h print this help information
81 -I <file>
83 read <file> as the initialization file
84 -i do not read the initialization file
86 -n do not execute feature tests on startup
88 -P list the programs supported and indicate which are available
90 -p <program>
92 use the named program
93 -s start up in substitution mode
95 -t show the results of feature tests
97 -v print the program name and version, then exit
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101 awk (1), ed (1),grep (1), perl (1), sed (1)
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105 Bill Poser (billposer@alum.mit.edu)
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108 GNU General Public License (http://www.gnu.org/licenses/gpl.txt), ver‐
109 sion 2.
110redet May 2007 REDET(1)