annotate runtime/indent/xml.vim @ 29236:0eef32b4ebbc

Update runtime files Commit: https://github.com/vim/vim/commit/d799daa660b8821943cbe1682f00da9e812dd48c Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jun 20 11:17:32 2022 +0100 Update runtime files
author Bram Moolenaar <Bram@vim.org>
date Mon, 20 Jun 2022 12:30:06 +0200
parents f0d7cb510ce3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 " Language: XML
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2 " Maintainer: Christian Brabandt <cb@256bit.org>
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3 " Repository: https://github.com/chrisbra/vim-xml-ftplugin
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4 " Previous Maintainer: Johannes Zellner <johannes@zellner.org>
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5 " Last Changed: 2020 Nov 4th
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6 " Last Change:
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7 " 20200529 - Handle empty closing tags correctly
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8 " 20191202 - Handle docbk filetype
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9 " 20190726 - Correctly handle non-tagged data
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10 " 20190204 - correctly handle wrap tags
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11 " https://github.com/chrisbra/vim-xml-ftplugin/issues/5
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12 " 20190128 - Make sure to find previous tag
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13 " https://github.com/chrisbra/vim-xml-ftplugin/issues/4
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14 " 20181116 - Fix indentation when tags start with a colon or an underscore
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15 " https://github.com/vim/vim/pull/926
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16 " 20181022 - Do not overwrite indentkeys setting
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17 " https://github.com/chrisbra/vim-xml-ftplugin/issues/1
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18 " 20180724 - Correctly indent xml comments https://github.com/vim/vim/issues/3200
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19 "
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20 " Notes:
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21 " 1) does not indent pure non-xml code (e.g. embedded scripts)
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22 " 2) will be confused by unbalanced tags in comments
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23 " or CDATA sections.
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24 " 2009-05-26 patch by Nikolai Weibull
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25 " TODO: implement pre-like tags, see xml_indent_open / xml_indent_close
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26
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27 " Only load this indent file when no other was loaded.
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28 if exists("b:did_indent")
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29 finish
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30 endif
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31 let b:did_indent = 1
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32 let s:keepcpo= &cpo
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33 set cpo&vim
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34
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35 " [-- local settings (must come before aborting the script) --]
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36 " Attention: Parameter use_syntax_check is used by the docbk.vim indent script
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37 setlocal indentexpr=XmlIndentGet(v:lnum,1)
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38 setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,},!^F
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39 " autoindent: used when the indentexpr returns -1
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40 setlocal autoindent
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41
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42 let b:undo_indent = "setl ai< inde< indk<"
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43
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44 if !exists('b:xml_indent_open')
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45 let b:xml_indent_open = '.\{-}<[:A-Z_a-z]'
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46 " pre tag, e.g. <address>
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47 " let b:xml_indent_open = '.\{-}<[/]\@!\(address\)\@!'
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48 endif
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49
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50 if !exists('b:xml_indent_close')
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51 let b:xml_indent_close = '.\{-}</\|/>.\{-}'
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52 " end pre tag, e.g. </address>
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53 " let b:xml_indent_close = '.\{-}</\(address\)\@!'
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54 endif
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55
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56 if !exists('b:xml_indent_continuation_filetype')
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57 let b:xml_indent_continuation_filetype = 'xml'
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58 endif
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59
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60 let &cpo = s:keepcpo
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61 unlet s:keepcpo
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62
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63 " [-- finish, if the function already exists --]
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64 if exists('*XmlIndentGet')
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65 finish
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66 endif
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67
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68 let s:keepcpo= &cpo
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69 set cpo&vim
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70
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71 fun! <SID>XmlIndentWithPattern(line, pat)
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72 let s = substitute('x'.a:line, a:pat, "\1", 'g')
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73 return strlen(substitute(s, "[^\1].*$", '', ''))
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74 endfun
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75
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76 " [-- check if it's xml --]
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77 fun! <SID>XmlIndentSynCheck(lnum)
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78 if &syntax != ''
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79 let syn1 = synIDattr(synID(a:lnum, 1, 1), 'name')
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80 let syn2 = synIDattr(synID(a:lnum, strlen(getline(a:lnum)) - 1, 1), 'name')
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81 if syn1 != '' && syn1 !~ 'xml' && syn2 != '' && syn2 !~ 'xml'
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82 " don't indent pure non-xml code
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83 return 0
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84 endif
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85 endif
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86 return 1
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87 endfun
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88
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89 " [-- return the sum of indents of a:lnum --]
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90 fun! <SID>XmlIndentSum(line, style, add)
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91 if <SID>IsXMLContinuation(a:line) && a:style == 0 && !<SID>IsXMLEmptyClosingTag(a:line)
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92 " no complete tag, add one additional indent level
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93 " but only for the current line
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94 return a:add + shiftwidth()
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95 elseif <SID>HasNoTagEnd(a:line)
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96 " no complete tag, return initial indent
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97 return a:add
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98 endif
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99 if a:style == match(a:line, '^\s*</')
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100 return (shiftwidth() *
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101 \ (<SID>XmlIndentWithPattern(a:line, b:xml_indent_open)
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102 \ - <SID>XmlIndentWithPattern(a:line, b:xml_indent_close)
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103 \ - <SID>XmlIndentWithPattern(a:line, '.\{-}/>'))) + a:add
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104 else
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105 return a:add
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106 endif
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107 endfun
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108
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109 " Main indent function
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110 fun! XmlIndentGet(lnum, use_syntax_check)
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111 " Find a non-empty line above the current line.
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112 if prevnonblank(a:lnum - 1) == 0
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113 " Hit the start of the file, use zero indent.
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114 return 0
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115 endif
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116 " Find previous line with a tag (regardless whether open or closed,
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117 " but always restrict the match to a line before the current one
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118 " Note: xml declaration: <?xml version="1.0"?>
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119 " won't be found, as it is not a legal tag name
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120 let ptag_pattern = '\%(.\{-}<[/:A-Z_a-z]\)'. '\%(\&\%<'. a:lnum .'l\)'
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121 let ptag = search(ptag_pattern, 'bnW')
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122 " no previous tag
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123 if ptag == 0
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124 return 0
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125 endif
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126
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127 let pline = getline(ptag)
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128 let pind = indent(ptag)
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129
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130 let syn_name_start = '' " Syntax element at start of line (excluding whitespace)
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131 let syn_name_end = '' " Syntax element at end of line
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132 let curline = getline(a:lnum)
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133 if a:use_syntax_check
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134 let check_lnum = <SID>XmlIndentSynCheck(ptag)
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135 let check_alnum = <SID>XmlIndentSynCheck(a:lnum)
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136 if check_lnum == 0 || check_alnum == 0
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137 return indent(a:lnum)
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138 endif
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139 let syn_name_end = synIDattr(synID(a:lnum, strlen(curline) - 1, 1), 'name')
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140 let syn_name_start = synIDattr(synID(a:lnum, match(curline, '\S') + 1, 1), 'name')
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141 let prev_syn_name_end = synIDattr(synID(ptag, strlen(pline) - 1, 1), 'name')
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142 " not needed (yet?)
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143 " let prev_syn_name_start = synIDattr(synID(ptag, match(pline, '\S') + 1, 1), 'name')
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144 endif
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145
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146 if syn_name_end =~ 'Comment' && syn_name_start =~ 'Comment'
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147 return <SID>XmlIndentComment(a:lnum)
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148 elseif empty(syn_name_start) && empty(syn_name_end) && a:use_syntax_check
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149 " non-xml tag content: use indent from 'autoindent'
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150 if pline =~ b:xml_indent_close
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151 return pind
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152 elseif !empty(prev_syn_name_end)
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153 " only indent by an extra shiftwidth, if the previous line ends
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154 " with an XML like tag
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155 return pind + shiftwidth()
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156 else
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157 " no extra indent, looks like a text continuation line
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158 return pind
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159 endif
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160 endif
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161
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162 " Get indent from previous tag line
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163 let ind = <SID>XmlIndentSum(pline, -1, pind)
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164 " Determine indent from current line
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165 let ind = <SID>XmlIndentSum(curline, 0, ind)
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166 return ind
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167 endfun
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168
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169 func! <SID>IsXMLContinuation(line)
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170 " Checks, whether or not the line matches a start-of-tag
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171 return a:line !~ '^\s*<' && &ft =~# b:xml_indent_continuation_filetype
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172 endfunc
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173
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174 func! <SID>HasNoTagEnd(line)
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175 " Checks whether or not the line matches '>' (so finishes a tag)
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176 return a:line !~ '>\s*$'
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177 endfunc
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178
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179 func! <SID>IsXMLEmptyClosingTag(line)
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180 " Checks whether the line ends with an empty closing tag such as <lb/>
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181 return a:line =~? '<[^>]*/>\s*$'
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182 endfunc
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183
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184 " return indent for a commented line,
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185 " the middle part might be indented one additional level
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186 func! <SID>XmlIndentComment(lnum)
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187 let ptagopen = search('.\{-}<[:A-Z_a-z]\_[^/]\{-}>.\{-}', 'bnW')
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188 let ptagclose = search(b:xml_indent_close, 'bnW')
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189 if getline(a:lnum) =~ '<!--'
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190 " if previous tag was a closing tag, do not add
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191 " one additional level of indent
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192 if ptagclose > ptagopen && a:lnum > ptagclose
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193 " If the previous tag was closed on the same line as it was
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194 " declared, we should indent with its indent level.
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195 if !<SID>IsXMLContinuation(getline(ptagclose))
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196 return indent(ptagclose)
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197 else
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198 return indent(ptagclose) - shiftwidth()
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199 endif
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200 elseif ptagclose == ptagopen
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201 return indent(ptagclose)
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202 else
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203 " start of comment, add one indentation level
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204 return indent(ptagopen) + shiftwidth()
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205 endif
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206 elseif getline(a:lnum) =~ '-->'
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207 " end of comment, same as start of comment
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208 return indent(search('<!--', 'bnW'))
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209 else
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210 " middle part of comment, add one additional level
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211 return indent(search('<!--', 'bnW')) + shiftwidth()
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212 endif
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213 endfunc
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214
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215 let &cpo = s:keepcpo
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216 unlet s:keepcpo
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217
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218 " vim:ts=4 et sts=-1 sw=0