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