annotate .vim/indent/python.vim @ 428:bd5b61866ef8

packages: drop a few emacs packages
author Augie Fackler <raf@durin42.com>
date Tue, 29 Nov 2016 14:06:50 -0500
parents c30d68fbd368
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 " Python indent file
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2 " Language: Python
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3 " Maintainer: Eric Mc Sween <em@tomcom.de>
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4 " Original Author: David Bustos <bustos@caltech.edu>
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5 " Last Change: 2004 Jun 07
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6
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7 " Only load this indent file when no other was loaded.
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8 if exists("b:did_indent")
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9 finish
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10 endif
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11 let b:did_indent = 1
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12
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13 setlocal expandtab
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14 setlocal nolisp
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15 setlocal autoindent
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16 setlocal indentexpr=GetPythonIndent(v:lnum)
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17 setlocal indentkeys=!^F,o,O,<:>,0),0],0},=elif,=except,0#
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18
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19
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20 let s:maxoff = 50
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21
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22 " Find backwards the closest open parenthesis/bracket/brace.
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23 function! s:SearchParensPair()
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24 let line = line('.')
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25 let col = col('.')
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26
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27 " Skip strings and comments and don't look too far
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28 let skip = "line('.') < " . (line - s:maxoff) . " ? dummy :" .
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29 \ 'synIDattr(synID(line("."), col("."), 0), "name") =~? ' .
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30 \ '"string\\|comment"'
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31
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32 " Search for parentheses
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33 call cursor(line, col)
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34 let parlnum = searchpair('(', '', ')', 'bW', skip)
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35 let parcol = col('.')
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36
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37 " Search for brackets
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38 call cursor(line, col)
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39 let par2lnum = searchpair('\[', '', '\]', 'bW', skip)
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40 let par2col = col('.')
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41
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42 " Search for braces
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43 call cursor(line, col)
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44 let par3lnum = searchpair('{', '', '}', 'bW', skip)
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45 let par3col = col('.')
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46
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47 " Get the closest match
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48 if par2lnum > parlnum || (par2lnum == parlnum && par2col > parcol)
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49 let parlnum = par2lnum
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50 let parcol = par2col
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51 endif
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52 if par3lnum > parlnum || (par3lnum == parlnum && par3col > parcol)
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53 let parlnum = par3lnum
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54 let parcol = par3col
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55 endif
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56
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57 " Put the cursor on the match
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58 if parlnum > 0
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59 call cursor(parlnum, parcol)
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60 endif
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61 return parlnum
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62 endfunction
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63
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64 " Find the start of a multi-line statement
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65 function! s:StatementStart(lnum)
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66 let lnum = a:lnum
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67 while 1
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68 if getline(lnum - 1) =~ '\\$'
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69 let lnum = lnum - 1
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70 else
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71 call cursor(lnum, 1)
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72 let maybe_lnum = s:SearchParensPair()
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73 if maybe_lnum < 1
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74 return lnum
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75 else
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76 let lnum = maybe_lnum
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77 endif
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78 endif
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79 endwhile
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80 endfunction
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81
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82 " Find the block starter that matches the current line
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83 function! s:BlockStarter(lnum, block_start_re)
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84 let lnum = a:lnum
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85 let maxindent = 10000 " whatever
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86 while lnum > 1
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87 let lnum = prevnonblank(lnum - 1)
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88 if indent(lnum) < maxindent
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89 if getline(lnum) =~ a:block_start_re
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90 return lnum
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91 else
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92 let maxindent = indent(lnum)
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93 " It's not worth going further if we reached the top level
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94 if maxindent == 0
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95 return -1
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96 endif
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97 endif
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98 endif
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99 endwhile
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100 return -1
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101 endfunction
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102
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103 function! GetPythonIndent(lnum)
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104
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105 " First line has indent 0
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106 if a:lnum == 1
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107 return 0
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108 endif
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109
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110 " If we can find an open parenthesis/bracket/brace, line up with it.
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111 call cursor(a:lnum, 1)
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112 let parlnum = s:SearchParensPair()
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113 if parlnum > 0
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114 let parcol = col('.')
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115 let closing_paren = match(getline(a:lnum), '^\s*[])}]') != -1
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116 if match(getline(parlnum), '[([{]\s*$', parcol - 1) != -1
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117 if closing_paren
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118 return indent(parlnum)
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119 else
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120 return indent(parlnum) + &shiftwidth
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121 endif
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122 else
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123 if closing_paren
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124 return parcol - 1
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125 else
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126 return parcol
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127 endif
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128 endif
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129 endif
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130
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131 " Examine this line
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132 let thisline = getline(a:lnum)
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133 let thisindent = indent(a:lnum)
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134
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135 " If the line starts with 'elif' or 'else', line up with 'if' or 'elif'
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136 if thisline =~ '^\s*\(elif\|else\)\>'
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137 let bslnum = s:BlockStarter(a:lnum, '^\s*\(if\|elif\)\>')
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138 if bslnum > 0
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139 return indent(bslnum)
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140 else
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141 return -1
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142 endif
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143 endif
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144
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145 " If the line starts with 'except' or 'finally', line up with 'try'
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146 " or 'except'
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147 if thisline =~ '^\s*\(except\|finally\)\>'
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148 let bslnum = s:BlockStarter(a:lnum, '^\s*\(try\|except\)\>')
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149 if bslnum > 0
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150 return indent(bslnum)
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151 else
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152 return -1
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153 endif
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154 endif
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155
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156 " Examine previous line
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157 let plnum = a:lnum - 1
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158 let pline = getline(plnum)
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159 let sslnum = s:StatementStart(plnum)
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160
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161 " If the previous line is blank, keep the same indentation
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162 if pline =~ '^\s*$'
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163 return -1
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164 endif
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165
c30d68fbd368 Initial import from svn.
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166 " If this line is explicitly joined, try to find an indentation that looks
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167 " good.
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168 if pline =~ '\\$'
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169 let compound_statement = '^\s*\(if\|while\|for\s.*\sin\|except\)\s*'
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170 let maybe_indent = matchend(getline(sslnum), compound_statement)
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171 if maybe_indent != -1
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172 return maybe_indent
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173 else
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174 return indent(sslnum) + &sw * 2
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175 endif
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176 endif
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177
c30d68fbd368 Initial import from svn.
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178 " If the previous line ended with a colon, indent relative to
c30d68fbd368 Initial import from svn.
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179 " statement start.
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180 if pline =~ ':\s*$'
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181 return indent(sslnum) + &sw
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182 endif
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183
c30d68fbd368 Initial import from svn.
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184 " If the previous line was a stop-execution statement or a pass
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185 if getline(sslnum) =~ '^\s*\(break\|continue\|raise\|return\|pass\)\>'
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186 " See if the user has already dedented
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187 if indent(a:lnum) > indent(sslnum) - &sw
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188 " If not, recommend one dedent
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189 return indent(sslnum) - &sw
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190 endif
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191 " Otherwise, trust the user
c30d68fbd368 Initial import from svn.
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192 return -1
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193 endif
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194
c30d68fbd368 Initial import from svn.
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195 " In all other cases, line up with the start of the previous statement.
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196 return indent(sslnum)
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197 endfunction