Mercurial > vim
annotate runtime/doc/textprop.txt @ 15349:6abee072b93c v8.1.0682
patch 8.1.0682: text properties not adjusted when backspacing replaced text
commit https://github.com/vim/vim/commit/196d157f12cf0476d97f78834155fc67d6b161de
Author: Bram Moolenaar <Bram@vim.org>
Date: Wed Jan 2 23:47:18 2019 +0100
patch 8.1.0682: text properties not adjusted when backspacing replaced text
Problem: Text properties are not adjusted when backspacing replaced text.
Solution: Keep text properties on text restored in replace mode.
author | Bram Moolenaar <Bram@vim.org> |
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date | Thu, 03 Jan 2019 00:00:54 +0100 |
parents | 9d3d7b0f4861 |
children | f0f06837a699 |
rev | line source |
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15334 | 1 *textprop.txt* For Vim version 8.1. Last change: 2018 Dec 30 |
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2 |
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3 |
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4 VIM REFERENCE MANUAL by Bram Moolenaar |
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5 |
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6 |
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7 Displaying text with properties attached. *text-properties* |
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8 |
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9 THIS IS UNDER DEVELOPMENT - ANYTHING MAY STILL CHANGE *E967* |
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10 |
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11 What is not working yet: |
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12 - Adjusting column/length when inserting text |
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13 - Text properties spanning more than one line |
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14 - prop_find() |
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15 - callbacks when text properties are outdated |
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16 |
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17 |
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18 1. Introduction |text-prop-intro| |
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19 2. Functions |text-prop-functions| |
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20 |
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21 |
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22 {Vi does not have text properties} |
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23 {not able to use text properties when the |+textprop| feature was |
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24 disabled at compile time} |
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25 |
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26 ============================================================================== |
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27 1. Introduction *text-prop-intro* |
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28 |
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29 Text properties can be attached to text in a buffer. They will move with the |
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30 text: If lines are deleted or inserted the properties move with the text they |
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31 are attached to. Also when inserting/deleting text in the line before the |
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32 text property. And when inserting/deleting text inside the text property, it |
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33 will increase/decrease in size. |
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34 |
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35 The main use for text properties is to highlight text. This can be seen as a |
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36 replacement for syntax highlighting. Instead of defining patterns to match |
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37 the text, the highlighting is set by a script, possibly using the output of an |
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38 external parser. This only needs to be done once, not every time when |
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39 redrawing the screen, thus can be much faster, after the initial cost of |
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40 attaching the text properties. |
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41 |
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42 Text properties can also be used for other purposes to identify text. For |
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43 example, add a text property on a function name, so that a search can be |
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44 defined to jump to the next/previous function. |
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45 |
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46 A text property is attached at a specific line and column, and has a specified |
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47 length. The property can span multiple lines. |
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48 |
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49 A text property has these fields: |
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50 "id" a number to be used as desired |
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51 "type" the name of a property type |
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52 |
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53 |
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54 Property Types ~ |
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55 *E971* |
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56 A text property normally has the name of a property type, which defines |
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57 how to highlight the text. The property type can have these entries: |
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58 "highlight" name of the highlight group to use |
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59 "priority" when properties overlap, the one with the highest |
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60 priority will be used. |
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61 "start_incl" when TRUE inserts at the start position will be |
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62 included in the text property |
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63 "end_incl" when TRUE inserts at the end position will be |
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64 included in the text property |
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65 |
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66 |
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67 Example ~ |
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68 |
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69 Suppose line 11 in a buffer has this text (excluding the indent): |
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70 |
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71 The number 123 is smaller than 4567. |
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72 |
15334 | 73 To highlight the numbers in this text: > |
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74 call prop_type_add('number', {'highlight': 'Constant'}) |
15194 | 75 call prop_add(11, 12, {'length': 3, 'type': 'number'}) |
76 call prop_add(11, 32, {'length': 4, 'type': 'number'}) | |
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77 |
15334 | 78 Try inserting or deleting lines above the text, you will see that the text |
79 properties stick to the text, thus the line number is adjusted as needed. | |
80 | |
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81 Setting "start_incl" and "end_incl" is useful when white space surrounds the |
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82 text, e.g. for a function name. Using false is useful when the text starts |
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83 and/or ends with a specific character, such as the quote surrounding a string. |
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84 |
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85 func FuncName(arg) ~ |
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86 ^^^^^^^^ property with start_incl and end_incl set |
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87 |
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88 var = "text"; ~ |
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89 ^^^^^^ property with start_incl and end_incl not set |
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90 |
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91 Nevertheless, when text is inserted or deleted the text may need to be parsed |
15194 | 92 and the text properties updated. But this can be done asynchronously. |
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93 |
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94 ============================================================================== |
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95 2. Functions *text-prop-functions* |
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96 |
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97 Manipulating text property types: |
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98 |
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99 prop_type_add({name}, {props}) define a new property type |
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100 prop_type_change({name}, {props}) change an existing property type |
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101 prop_type_delete({name} [, {props}]) delete a property type |
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102 prop_type_get([{name} [, {props}]) get property type values |
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103 prop_type_list([{props}]) get list of property types |
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104 |
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105 |
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106 Manipulating text properties: |
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107 |
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108 prop_add({lnum}, {col}, {props}) add a text property |
15281 | 109 prop_clear({lnum} [, {lnum-end} [, {bufnr}]]) |
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110 remove all text properties |
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111 prop_find({props} [, {direction}]) search for a text property |
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112 prop_list({lnum} [, {props}) text properties in {lnum} |
15281 | 113 prop_remove({props} [, {lnum} [, {lnum-end}]]) |
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114 remove a text property |
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115 |
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116 |
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117 vim:tw=78:ts=8:noet:ft=help:norl: |