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Full Discussion: SED: Can't Repeat Search Character in SED Output
Top Forums UNIX for Dummies Questions & Answers SED: Can't Repeat Search Character in SED Output Post 302353552 by rhetoric101 on Tuesday 15th of September 2009 03:10:42 PM
Old 09-15-2009
The code you suggested worked very well! It replaces only the underscores betwen the tags, which is want I wanted.

Code:
sed '
s/\(<[^>]*>\)\([^>]*\)\(<[^>]*>\)/\1\n\2\3/g 
:loop
s/\n\([^<_]*\)_/\1_Q\n/g 
/\n[^<_]*_/b loop
s/\n//g' a

What I'd like to know is what are the key differences in your script that enables sed to reuse the underscore, whereas in mine, sed completely hangs if I try to use the "\1_Q" (but works if I just use "\1Q").

Any ideas?
Last edited by rhetoric101; 09-15-2009 at 04:12 PM.. Reason: Forgot closing parenthesis
 

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LEARN ABOUT DEBIAN

exfalso

exfalso(1)						      General Commands Manual							exfalso(1)

NAME

       exfalso - audio tag editor

SYNOPSIS

       exfalso [ directory ]

DESCRIPTION

       Ex Falso displays and edits audio metadata tags. Supported formats include MP3, Ogg Vorbis, FLAC, Musepack (MPC), WavPack, and MOD/XM/IT.

       This  manual  page  is  only  a	short  reference  for  Ex  Falso.  Complete documentation is available at http://code.google.com/p/quodli-
       bet/wiki/Guide.

OPTIONS

       Ex Falso may be given a directory to open on the command line.

TIED TAGS

       Many places in Ex Falso allow you to use "tied tags". Tied tags are two tag names joined  together  with  a  "~"  like  "title~version"	or
       "album~part".   Tied  tags  result  in  "nice"  displays  even when one of the tags is missing; for example, "title~version" will result in
       Title - Version when a version tag is present, but only Title when one isn't. You can tie any number of tags together.

RENAMING FILES

       Ex Falso allows you to rename files based on their tags. In some cases you may wish to alter the filename depending on  whether	some  tags
       are present or missing, in addition to their values. A common pattern might be
	   <tracknumber>. <title~version>
       You can use a '|' to only text when a tag is present:
	   <tracknumber|<tracknumber>. ><title~version>
       You can also specify literal text to use if the tag is missing by adding another '|':
	   <album|<album>|No Album> - <title>
       See http://code.google.com/p/quodlibet/wiki/Guide_Renaming.

BUGS

       See http://code.google.com/p/quodlibet/issues/list for a list of all currently open bugs and feature requests.

AUTHORS

       Joe Wreschnig and Michael Urman are the primary authors of Ex Falso.

SEE ALSO

       http://code.google.com/p/quodlibet/wiki/Guide,
       http://code.google.com/p/quodlibet/wiki/FAQ

								February 20th, 2006							exfalso(1)
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