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.IX Title "urxvt-selection-autotransform 1"
.TH urxvt-selection-autotransform 1 2024-03-07 9.31 RXVT-UNICODE
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH NAME
selection\-autotransform \- automatically transform select text
.SH DESCRIPTION
.IX Header "DESCRIPTION"
This selection allows you to do automatic transforms on a selection
whenever a selection is made.
.PP
It works by specifying perl snippets (most useful is a single \f(CW\*(C`s///\*(C'\fR
operator) that modify \f(CW$_\fR as resources:
.PP
.Vb 3
\&   URxvt.selection\-autotransform.0: transform
\&   URxvt.selection\-autotransform.1: transform
\&   ...
.Ve
.PP
For example, the following will transform selections of the form
\&\f(CW\*(C`filename:number\*(C'\fR, often seen in compiler messages, into \f(CWvi +$filename
$word\fR:
.PP
.Vb 1
\&   URxvt.selection\-autotransform.0: s/^([^:[:space:]]+):(\e\ed+):?$/vi +$2 \e\eQ$1\e\eE\e\ex0d/
.Ve
.PP
And this example matches the same,but replaces it with vi-commands you can
paste directly into your (vi :) editor:
.PP
.Vb 1
\&   URxvt.selection\-autotransform.0: s/^([^:[:space:]]+(\e\ed+):?$/:e \e\eQ$1\e\eE\e\ex0d:$2\e\ex0d/
.Ve
.PP
Of course, this can be modified to suit your needs and your editor :)
.PP
To expand the example above to typical perl error messages ("XXX at
FILENAME line YYY."), you need a slightly more elaborate solution:
.PP
.Vb 2
\&   URxvt.selection.pattern\-0: ( at .*? line \e\ed+[,.])
\&   URxvt.selection\-autotransform.0: s/^ at (.*?) line (\e\ed+)[,.]$/:e \e\eQ$1\eE\e\ex0d:$2\e\ex0d/
.Ve
.PP
The first line tells the selection code to treat the unchanging part of
every error message as a selection pattern, and the second line transforms
the message into vi commands to load the file.