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<a class="Constant" href="pi_logipat.html" name="pi_logipat.txt">pi_logipat.txt</a> Logical Patterns Jun 22, 2015<br>
<br>
Author: Charles E. Campbell <NdrOchip@ScampbellPfamily.AbizM><br>
Copyright: (c) 2004-2015 by Charles E. Campbell <a class="Constant" href="pi_logipat.html#logiPat-copyright" name="logiPat-copyright">logiPat-copyright</a><br>
The VIM LICENSE applies to LogiPat.vim and LogiPat.txt<br>
(see <a class="Identifier" href="uganda.html#copyright">copyright</a>) except use "LogiPat" instead of "Vim"<br>
No warranty, express or implied. Use At-Your-Own-Risk.<br>
<br>
<span class="PreProc">==============================================================================</span><br>
1. Contents <a class="Constant" href="pi_logipat.html#logiPat" name="logiPat">logiPat</a> <a class="Constant" href="pi_logipat.html#logiPat-contents" name="logiPat-contents">logiPat-contents</a><br>
<br>
1. Contents.................: <a class="Identifier" href="pi_logipat.html#logiPat-contents">logiPat-contents</a><br>
2. LogiPat Manual...........: <a class="Identifier" href="pi_logipat.html#logiPat-manual">logiPat-manual</a><br>
3. LogiPat Examples.........: <a class="Identifier" href="pi_logipat.html#logiPat-examples">logiPat-examples</a><br>
4. Caveat...................: <a class="Identifier" href="pi_logipat.html#logiPat-caveat">logiPat-caveat</a><br>
5. LogiPat History..........: <a class="Identifier" href="pi_logipat.html#logiPat-history">logiPat-history</a><br>
<br>
<br>
<span class="PreProc">==============================================================================</span><br>
2. LogiPat Manual <a class="Constant" href="pi_logipat.html#logiPat-manual" name="logiPat-manual">logiPat-manual</a> <a class="Constant" href="pi_logipat.html#logiPat-man" name="logiPat-man">logiPat-man</a><br>
<br>
<a class="Constant" href="pi_logipat.html#logiPat-arg" name="logiPat-arg">logiPat-arg</a> <a class="Constant" href="pi_logipat.html#logiPat-input" name="logiPat-input">logiPat-input</a> <a class="Constant" href="pi_logipat.html#logiPat-pattern" name="logiPat-pattern">logiPat-pattern</a> <a class="Constant" href="pi_logipat.html#logiPat-operators" name="logiPat-operators">logiPat-operators</a><br>
Boolean logic patterns are composed of<br>
<br>
operators ! = not<br>
| = logical-or<br>
& = logical-and<br>
grouping ( ... )<br>
patterns "pattern"<br>
<br>
:LogiPat {boolean-logic pattern} <a class="Constant" href="pi_logipat.html#:LogiPat" name=":LogiPat">:LogiPat</a><br>
:LogiPat is a command which takes a boolean-logic<br>
argument (<a class="Identifier" href="pi_logipat.html#logiPat-arg">logiPat-arg</a>).<br>
<br>
:LP {boolean-logic pattern} <a class="Constant" href="pi_logipat.html#:LP" name=":LP">:LP</a><br>
:LP is a shorthand command version of :LogiPat<br>
<br>
:LPE {boolean-logic pattern} <a class="Constant" href="pi_logipat.html#:LPE" name=":LPE">:LPE</a><br>
No search is done, but the conversion from the<br>
boolean logic pattern to the regular expression<br>
is performed and echoed onto the display.<br>
<br>
:LogiPatFlags {search flags} <a class="Constant" href="pi_logipat.html#LogiPat-flags" name="LogiPat-flags">LogiPat-flags</a><br>
:LogiPatFlags {search flags}<br>
LogiPat uses the <a class="Identifier" href="eval.html#search()">search()</a> command. The flags<br>
passed to that call to search() may be specified<br>
by the :LogiPatFlags command.<br>
<br>
:LPF {search flags} <a class="Constant" href="pi_logipat.html#:LPF" name=":LPF">:LPF</a><br>
:LPF is a shorthand version of :LogiPatFlags.<br>
<br>
:let pat=LogiPat({boolean-logic pattern}) <a class="Constant" href="pi_logipat.html#LogiPat()" name="LogiPat()">LogiPat()</a><br>
If one calls LogiPat() directly, no search<br>
is done, but the transformation from the boolean<br>
logic pattern into a regular expression pattern<br>
is performed and returned.<br>
<br>
To get a " inside a pattern, as opposed to having it delimit<br>
the pattern, double it.<br>
<br>
<br>
<span class="PreProc">==============================================================================</span><br>
3. LogiPat Examples <a class="Constant" href="pi_logipat.html#logiPat-examples" name="logiPat-examples">logiPat-examples</a><br>
<br>
LogiPat takes Boolean logic arguments and produces a regular<br>
expression which implements the choices. A series of examples<br>
follows:<br>
<br>
<div class="helpExample"> :LogiPat "abc"</div>
will search for lines containing the string :abc:<br>
<br>
<div class="helpExample"> :LogiPat "ab""cd"</div>
will search for lines containing the string :ab"c:<br>
<br>
<div class="helpExample"> :LogiPat !"abc"</div>
will search for lines which don't contain the string :abc:<br>
<br>
<div class="helpExample"> :LogiPat "abc"|"def"</div>
will search for lines which contain either the string<br>
:abc: or the string :def:<br>
<br>
<div class="helpExample"> :LogiPat !("abc"|"def")</div>
will search for lines which don't contain either<br>
of the strings :abc: or :def:<br>
<br>
<div class="helpExample"> :LogiPat "abc"&"def"</div>
will search for lines which contain both of the strings<br>
:abc: and :def:<br>
<br>
<div class="helpExample"> :let pat= LogiPat('!"abc"')</div>
will return the regular expression which will match<br>
all lines not containing :abc: . The double quotes<br>
are needed to pass normal patterns to LogiPat, and<br>
differentiate such patterns from boolean logic<br>
operators.<br>
<br>
<br>
<span class="PreProc">==============================================================================</span><br>
4. Caveat <a class="Constant" href="pi_logipat.html#logiPat-caveat" name="logiPat-caveat">logiPat-caveat</a><br>
<br>
The "not" operator may be fragile; ie. it may not always play well<br>
with the & (logical-and) and | (logical-or) operators. Please try out<br>
your patterns, possibly with :set hls, to insure that what is matching<br>
is what you want.<br>
<br>
<br>
<span class="PreProc">==============================================================================</span><br>
3. LogiPat History <a class="Constant" href="pi_logipat.html#logiPat-history" name="logiPat-history">logiPat-history</a><br>
<br>
v4 Jun 22, 2015 * LogiPat has been picked up by Bram M for standard<br>
plugin distribution; hence the name change<br>
v3 Sep 25, 2006 * LP_Or() fixed; it now encapsulates its output<br>
in \%(...\) parentheses<br>
Dec 12, 2011 * <a class="Identifier" href="pi_logipat.html#:LPE">:LPE</a> added<br>
* "" is mapped to a single " and left inside patterns<br>
v2 May 31, 2005 * LPF and LogiPatFlags commands weren't working<br>
v1 May 23, 2005 * initial release<br>
<br>
<br>
<span class="PreProc">==============================================================================</span><br>
vim:tw=78:ts=8:ft=help<br>
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