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1 " Vim filetype plugin file
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2 " Language: generic Changelog file
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3 " Maintainer: Nikolai Weibull <now@bitwi.se>
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4 " Latest Revision: 2014-01-10
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5 " Variables:
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6 " g:changelog_timeformat (deprecated: use g:changelog_dateformat instead) -
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7 " description: the timeformat used in ChangeLog entries.
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8 " default: "%Y-%m-%d".
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9 " g:changelog_dateformat -
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10 " description: the format sent to strftime() to generate a date string.
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11 " default: "%Y-%m-%d".
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12 " g:changelog_username -
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13 " description: the username to use in ChangeLog entries
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14 " default: try to deduce it from environment variables and system files.
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15 " Local Mappings:
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16 " <Leader>o -
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375
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17 " adds a new changelog entry for the current user for the current date.
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18 " Global Mappings:
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19 " <Leader>o -
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20 " switches to the ChangeLog buffer opened for the current directory, or
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21 " opens it in a new buffer if it exists in the current directory. Then
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22 " it does the same as the local <Leader>o described above.
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23 " Notes:
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24 " run 'runtime ftplugin/changelog.vim' to enable the global mapping for
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25 " changelog files.
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26 " TODO:
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27 " should we perhaps open the ChangeLog file even if it doesn't exist already?
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28 " Problem is that you might end up with ChangeLog files all over the place.
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29
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30 " If 'filetype' isn't "changelog", we must have been to add ChangeLog opener
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31 if &filetype == 'changelog'
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32 if exists('b:did_ftplugin')
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33 finish
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34 endif
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35 let b:did_ftplugin = 1
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36
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37 let s:cpo_save = &cpo
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38 set cpo&vim
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39
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40 " Set up the format used for dates.
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41 if !exists('g:changelog_dateformat')
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42 if exists('g:changelog_timeformat')
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43 let g:changelog_dateformat = g:changelog_timeformat
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44 else
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45 let g:changelog_dateformat = "%Y-%m-%d"
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46 endif
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47 endif
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48
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49 function! s:username()
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50 if exists('g:changelog_username')
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51 return g:changelog_username
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52 elseif $EMAIL != ""
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53 return $EMAIL
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54 elseif $EMAIL_ADDRESS != ""
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55 return $EMAIL_ADDRESS
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56 endif
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57
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58 let login = s:login()
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59 return printf('%s <%s@%s>', s:name(login), login, s:hostname())
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60 endfunction
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61
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62 function! s:login()
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63 return s:trimmed_system_with_default('whoami', 'unknown')
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64 endfunction
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65
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66 function! s:trimmed_system_with_default(command, default)
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67 return s:first_line(s:system_with_default(a:command, a:default))
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68 endfunction
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69
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70 function! s:system_with_default(command, default)
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71 let output = system(a:command)
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72 if v:shell_error
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73 return default
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74 endif
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75 return output
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76 endfunction
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77
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78 function! s:first_line(string)
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79 return substitute(a:string, '\n.*$', "", "")
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80 endfunction
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81
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82 function! s:name(login)
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83 for name in [s:gecos_name(a:login), $NAME, s:capitalize(a:login)]
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84 if name != ""
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85 return name
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86 endif
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87 endfor
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88 endfunction
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89
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90 function! s:gecos_name(login)
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91 for line in s:try_reading_file('/etc/passwd')
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92 if line =~ '^' . a:login . ':'
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93 return substitute(s:passwd_field(line, 5), '&', s:capitalize(a:login), "")
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94 endif
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95 endfor
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96 return ""
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97 endfunction
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98
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99 function! s:try_reading_file(path)
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100 try
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101 return readfile(a:path)
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102 catch
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103 return []
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104 endtry
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105 endfunction
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106
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107 function! s:passwd_field(line, field)
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108 let fields = split(a:line, ':', 1)
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109 if len(fields) < a:field
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110 return ""
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111 endif
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112 return fields[a:field - 1]
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113 endfunction
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114
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115 function! s:capitalize(word)
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116 return toupper(a:word[0]) . strpart(a:word, 1)
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117 endfunction
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118
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119 function! s:hostname()
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120 return s:trimmed_system_with_default('hostname', 'localhost')
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121 endfunction
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122
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123 " Format used for new date entries.
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124 if !exists('g:changelog_new_date_format')
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125 let g:changelog_new_date_format = "%d %u\n\n\t* %p%c\n\n"
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126 endif
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127
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128 " Format used for new entries to current date entry.
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129 if !exists('g:changelog_new_entry_format')
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130 let g:changelog_new_entry_format = "\t* %p%c"
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131 endif
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132
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133 " Regular expression used to find a given date entry.
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134 if !exists('g:changelog_date_entry_search')
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135 let g:changelog_date_entry_search = '^\s*%d\_s*%u'
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136 endif
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137
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138 " Regular expression used to find the end of a date entry
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139 if !exists('g:changelog_date_end_entry_search')
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140 let g:changelog_date_end_entry_search = '^\s*$'
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141 endif
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142
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143
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144 " Substitutes specific items in new date-entry formats and search strings.
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145 " Can be done with substitute of course, but unclean, and need \@! then.
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146 function! s:substitute_items(str, date, user, prefix)
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147 let str = a:str
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148 let middles = {'%': '%', 'd': a:date, 'u': a:user, 'p': a:prefix, 'c': '{cursor}'}
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149 let i = stridx(str, '%')
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150 while i != -1
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151 let inc = 0
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152 if has_key(middles, str[i + 1])
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153 let mid = middles[str[i + 1]]
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154 let str = strpart(str, 0, i) . mid . strpart(str, i + 2)
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155 let inc = strlen(mid) - 1
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156 endif
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157 let i = stridx(str, '%', i + 1 + inc)
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158 endwhile
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159 return str
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160 endfunction
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161
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162 " Position the cursor once we've done all the funky substitution.
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163 function! s:position_cursor()
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164 if search('{cursor}') > 0
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165 let lnum = line('.')
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166 let line = getline(lnum)
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167 let cursor = stridx(line, '{cursor}')
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168 call setline(lnum, substitute(line, '{cursor}', '', ''))
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169 endif
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170 startinsert!
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171 endfunction
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172
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173 " Internal function to create a new entry in the ChangeLog.
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174 function! s:new_changelog_entry(prefix)
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175 " Deal with 'paste' option.
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176 let save_paste = &paste
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177 let &paste = 1
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178 call cursor(1, 1)
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179 " Look for an entry for today by our user.
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180 let date = strftime(g:changelog_dateformat)
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181 let search = s:substitute_items(g:changelog_date_entry_search, date,
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182 \ s:username(), a:prefix)
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183 if search(search) > 0
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184 " Ok, now we look for the end of the date entry, and add an entry.
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185 call cursor(nextnonblank(line('.') + 1), 1)
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186 if search(g:changelog_date_end_entry_search, 'W') > 0
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187 let p = (line('.') == line('$')) ? line('.') : line('.') - 1
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188 else
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189 let p = line('.')
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190 endif
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191 let ls = split(s:substitute_items(g:changelog_new_entry_format, '', '', a:prefix),
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192 \ '\n')
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193 call append(p, ls)
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194 call cursor(p + 1, 1)
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195 else
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196 " Flag for removing empty lines at end of new ChangeLogs.
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197 let remove_empty = line('$') == 1
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198
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199 " No entry today, so create a date-user header and insert an entry.
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200 let todays_entry = s:substitute_items(g:changelog_new_date_format,
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201 \ date, s:username(), a:prefix)
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202 " Make sure we have a cursor positioning.
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203 if stridx(todays_entry, '{cursor}') == -1
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204 let todays_entry = todays_entry . '{cursor}'
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205 endif
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206
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207 " Now do the work.
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208 call append(0, split(todays_entry, '\n'))
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209
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210 " Remove empty lines at end of file.
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211 if remove_empty
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212 $-/^\s*$/-1,$delete
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213 endif
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214
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215 " Reposition cursor once we're done.
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216 call cursor(1, 1)
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217 endif
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218
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219 call s:position_cursor()
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220
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221 " And reset 'paste' option
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222 let &paste = save_paste
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223 endfunction
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224
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225 if exists(":NewChangelogEntry") != 2
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226 noremap <buffer> <silent> <Leader>o <Esc>:call <SID>new_changelog_entry('')<CR>
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227 command! -nargs=0 NewChangelogEntry call s:new_changelog_entry('')
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228 endif
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229
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230 let b:undo_ftplugin = "setl com< fo< et< ai<"
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231
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232 setlocal comments=
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233 setlocal formatoptions+=t
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234 setlocal noexpandtab
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235 setlocal autoindent
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236
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237 if &textwidth == 0
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238 setlocal textwidth=78
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239 let b:undo_ftplugin .= " tw<"
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240 endif
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241
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242 let &cpo = s:cpo_save
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243 unlet s:cpo_save
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244 else
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245 let s:cpo_save = &cpo
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246 set cpo&vim
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247
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248 " Add the Changelog opening mapping
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249 nnoremap <silent> <Leader>o :call <SID>open_changelog()<CR>
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250
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251 function! s:open_changelog()
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252 let path = expand('%:p:h')
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253 if exists('b:changelog_path')
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254 let changelog = b:changelog_path
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255 else
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256 if exists('b:changelog_name')
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257 let name = b:changelog_name
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258 else
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259 let name = 'ChangeLog'
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260 endif
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261 while isdirectory(path)
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262 let changelog = path . '/' . name
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263 if filereadable(changelog)
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264 break
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265 endif
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266 let parent = substitute(path, '/\+[^/]*$', "", "")
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267 if path == parent
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268 break
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269 endif
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270 let path = parent
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271 endwhile
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272 endif
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273 if !filereadable(changelog)
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274 return
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275 endif
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276
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277 if exists('b:changelog_entry_prefix')
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278 let prefix = call(b:changelog_entry_prefix, [])
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279 else
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280 let prefix = substitute(strpart(expand('%:p'), strlen(path)), '^/\+', "", "")
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281 endif
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282
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283 let buf = bufnr(changelog)
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284 if buf != -1
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285 if bufwinnr(buf) != -1
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286 execute bufwinnr(buf) . 'wincmd w'
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287 else
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288 execute 'sbuffer' buf
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289 endif
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290 else
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291 execute 'split' fnameescape(changelog)
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292 endif
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293
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294 call s:new_changelog_entry(prefix)
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295 endfunction
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296
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297 let &cpo = s:cpo_save
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298 unlet s:cpo_save
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299 endif
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