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annotate runtime/doc/pi_logipat.txt @ 20788:072ad890c227 v8.2.0946

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patch 8.2.0946: cannot use "q" to cancel a number prompt Commit: https://github.com/vim/vim/commit/eebd555733491cb55b9f30fe28772c0fd0ebacf7 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jun 10 15:45:57 2020 +0200 patch 8.2.0946: cannot use "q" to cancel a number prompt Problem: Cannot use "q" to cancel a number prompt. Solution: Recognize "q" instead of ignoring it.
author Bram Moolenaar <Bram@vim.org>
date Wed, 10 Jun 2020 16:00:05 +0200
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1 *pi_logipat.txt* Logical Patterns May 01, 2019
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2
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3 Author: Charles E. Campbell <NcampObell@SdrPchip.AorgM-NOSPAM>
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4 Copyright: (c) 2004-2016 by Charles E. Campbell *logiPat-copyright*
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5 The VIM LICENSE applies to LogiPat.vim and LogiPat.txt
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6 (see |copyright|) except use "LogiPat" instead of "Vim"
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7 No warranty, express or implied. Use At-Your-Own-Risk.
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8
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9 ==============================================================================
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10 1. Contents *logiPat* *logiPat-contents*
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11
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12 1. Contents.................: |logiPat-contents|
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13 2. LogiPat Manual...........: |logiPat-manual|
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14 3. LogiPat Examples.........: |logiPat-examples|
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15 4. Caveat...................: |logiPat-caveat|
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16 5. LogiPat History..........: |logiPat-history|
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17
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18
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19 ==============================================================================
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20 2. LogiPat Manual *logiPat-manual* *logiPat-man*
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21
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22 *logiPat-arg* *logiPat-input* *logiPat-pattern* *logiPat-operators*
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23 Boolean logic patterns are composed of
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24
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25 operators ! = not
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26 | = logical-or
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27 & = logical-and
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28 grouping ( ... )
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29 patterns "pattern"
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30
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31 *logiPat-cmd*
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32 :LogiPat {boolean-logic pattern} *:LogiPat*
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33 :LogiPat is a command which takes a boolean-logic
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34 argument (|logiPat-arg|).
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35
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36 :LP {boolean-logic pattern} *:LP*
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37 :LP is a shorthand command version of :LogiPat
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38 (|logiPat-cmd|).
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39
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40 :LPE {boolean-logic pattern} *:LPE*
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41 No search is done, but the conversion from the
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42 boolean logic pattern to the regular expression
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43 is performed and echoed onto the display.
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44
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45 :LogiPatFlags {search flags} *LogiPat-flags*
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46 LogiPat uses the |search()| command. The flags
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47 passed to that call to search() may be specified
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48 by the :LogiPatFlags command.
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49
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50 :LPF {search flags} *:LPF*
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51 :LPF is a shorthand version of :LogiPatFlags.
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52
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53 :let pat=LogiPat({boolean-logic pattern}) *LogiPat()*
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54 If one calls LogiPat() directly, no search
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55 is done, but the transformation from the boolean
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56 logic pattern into a regular expression pattern
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57 is performed and returned.
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58
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59 To get a " inside a pattern, as opposed to having it delimit
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60 the pattern, double it.
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61
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62
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63 ==============================================================================
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64 3. LogiPat Examples *logiPat-examples*
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65
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66 LogiPat takes Boolean logic arguments and produces a regular
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67 expression which implements the choices. A series of examples
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68 follows:
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69 >
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70 :LogiPat "abc"
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71 < will search for lines containing the string :abc:
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72 >
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73 :LogiPat "ab""cd"
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74 < will search for lines containing the string :ab"cd:
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75 >
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76 :LogiPat !"abc"
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77 < will search for lines which don't contain the string :abc:
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78 >
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79 :LogiPat "abc"|"def"
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80 < will search for lines which contain either the string
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81 :abc: or the string :def:
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82 >
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83 :LogiPat !("abc"|"def")
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84 < will search for lines which don't contain either
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85 of the strings :abc: or :def:
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86 >
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87 :LogiPat "abc"&"def"
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88 < will search for lines which contain both of the strings
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89 :abc: and :def:
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90 >
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91 :let pat= LogiPat('!"abc"')
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92 < will return the regular expression which will match
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93 all lines not containing :abc: . The double quotes
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94 are needed to pass normal patterns to LogiPat, and
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95 differentiate such patterns from boolean logic
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96 operators.
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97
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98
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99 ==============================================================================
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100 4. Caveat *logiPat-caveat*
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101
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102 The "not" operator may be fragile; ie. it may not always play well
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103 with the & (logical-and) and | (logical-or) operators. Please try out
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104 your patterns, possibly with :set hls, to insure that what is matching
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105 is what you want.
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106
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107
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108 ==============================================================================
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109 5. LogiPat History *logiPat-history*
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110
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111 v4 Jun 22, 2015 * LogiPat has been picked up by Bram M for standard
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112 plugin distribution; hence the name change
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113 v3 Sep 25, 2006 * LP_Or() fixed; it now encapsulates its output
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114 in \%(...\) parentheses
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115 Dec 12, 2011 * |:LPE| added
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116 * "" is mapped to a single " and left inside patterns
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117 v2 May 31, 2005 * LPF and LogiPatFlags commands weren't working
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118 v1 May 23, 2005 * initial release
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119
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120
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121 ==============================================================================
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122 vim:tw=78:ts=8:noet:ft=help