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Full Discussion: Equivalence classes don't work
Top Forums Shell Programming and Scripting Equivalence classes don't work Post 303042093 by Scrutinizer on Saturday 14th of December 2019 01:54:54 AM
Old 12-14-2019
On Solaris 10, I tried the following, using the POSIX compliant utilities which are in /usr/xpg[46]/bin:

Code:
$ export PATH=/usr/xpg6/bin:/usr/xpg4/bin:$PATH
$ printf "%s\n" Estrés Miraré http://ën.wikipedia.org | LC_CTYPE=es_MX.UTF-8 LC_COLLATE=es_MX.UTF-8 tr '[=ë=]' x
Estrés
Miraré
http://xn.wikipedia.org
$ printf "%s\n" Estrés Miraré http://ën.wikipedia.org | LC_CTYPE=es_MX.UTF-8 LC_COLLATE=es_MX.UTF-8 sed 's/[[=ë=]]/x/g'
xstrxs
Mirarx
http://xn.wikipxdia.org

So tr did not work, but sed did

On Linux I had the same experience, but tr also gave an error message, so it appears it only uses single byte characters and it does not understand equivalence classes, but sed worked:

Code:
$ printf "%s\n" Estrés Miraré http://ën.wikipedia.org | LC_CTYPE=es_MX.UTF-8 LC_COLLATE=es_MX.UTF-8 tr '[=ë=]' x
tr: \303\253: equivalence class operand must be a single character
$ printf "%s\n" Estrés Miraré http://ën.wikipedia.org | LC_CTYPE=es_MX.UTF-8 LC_COLLATE=es_MX.UTF-8 sed 's/[[=ë=]]/x/g'
xstrxs
Mirarx
http://xn.wikipxdia.org

Last edited by Scrutinizer; 12-14-2019 at 06:33 AM..
These 2 Users Gave Thanks to Scrutinizer For This Post:
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LEARN ABOUT CENTOS

libquvi

libquvi(3)							  libquvi manual							libquvi(3)

NAME

       libquvi - Overview of query media library

DESCRIPTION

       libquvi is a cross-platform library for parsing flash media stream URLs with C API. The term "quvi" is a shorthand for "query video".

   API documentation
       <http://quvi.sourceforge.net/doc/>

   Motivation
       libquvi originates from the idea of allowing users to view the videos without having to install or use flash. It is a "workaround", not an
       "alternative" to flash.

       See also:
	<http://en.wikipedia.org/wiki/Adobe_Flash#Performance>
	<http://en.wikipedia.org/wiki/Adobe_Flash#Flash_client_security>
	<http://en.wikipedia.org/wiki/Adobe_Flash#Alternatives_to_Flash>

ENVIRONMENT

   LIBQUVI_SCRIPTSDIR
       Path to the libquvi-scripts directory. This overrides the libquvi default search paths for the scripts. See also the tutorial in the "API
       documentation".

   LIBQUVI_SHOW_SCANDIR
       If set, libquvi prints the lua script search paths to the stderr.

   LIBQUVI_SHOW_SCRIPT
       If set, the lua scripts found by libquvi are printed to the stderr.

WWW

	Home  : <http://quvi.sourceforge.net>
	gitweb: <http://repo.or.cz/w/libquvi.git>

LICENSE

       libquvi is free software, licensed under the LGPLv2.1+. The lua scripts that libquvi uses are considered as programs and using the lua
       scripts is linking.

SEE ALSO

       "libquvi-scripts(7)", quvi(1)

AUTHOR

       Toni Gundogdu <legatvs at sign gmail com>

       Thanks to all those who have contributed to the project by sending patches, reporting bugs and writing feedback. You know who you are.

v0.4.1								    2011-09-23								libquvi(3)
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