class TmSnippet
  @@known_substitutions["content"] += [{
                                         /`[^`]*snippet_paren\.rb[\s\t]*`/          => "`(yas/ruby-snippet-paren)`",
                                         /`[^`]*snippet_paren\.rb end[^`]*`/        => "`(yas/ruby-snippet-paren \'close)`"
                                       },
                                       {
                                         %q@${1/.+/(/}@                                                                        => '${1:$(and (yas/text) "(")}',
                                         %q@${1/.+/)/}@                                                                        => '${1:$(and (yas/text) ")")}',
                                         %q@${2/.+/ => /}@                                                                     => '${2:$(and (yas/text) " => ")}',
                                         %q@${1:${TM_FILENAME/\.\w+//}@                                                        => '${1:$(and buffer-file-name (file-name-sans-extension buffer-file-name))}',
                                         %q@${1/(^.*?\S.*)|.*/(?1:\()/}@                                                       => '${1:$(and (string-match "[^\s\t]" yas/text) "(" )}',
                                         %q@${1/(^.*?\S.*)|.*/(?1:\))/}@                                                       => '${1:$(and (string-match "[^\s\t]" yas/text) ")" )}',
                                         %q@${2/(^.*?\S.*)|.*/(?1:\()/}@                                                       => '${2:$(and (string-match "[^\s\t]" yas/text) "(" )}',
                                         %q@${2/(^.*?\S.*)|.*/(?1:\))/}@                                                       => '${2:$(and (string-match "[^\s\t]" yas/text) ")" )}',
                                         %q@${3/(^.*?\S.*)|.*/(?1:\()/}@                                                       => '${3:$(and (string-match "[^\s\t]" yas/text) "(" )}',
                                         %q@${3/(^.*?\S.*)|.*/(?1:\))/}@                                                       => '${3:$(and (string-match "[^\s\t]" yas/text) ")" )}',
                                         %q@${2/^\s*$|(.*\S.*)/(?1: )/}@                                                       => '${2:$(and (string-match "[^\s\t]" yas/text) " " )}',
                                         %q@${3/^\s*$|(.*\S.*)/(?1: )/}@                                                       => '${3:$(and (string-match "[^\s\t]" yas/text) " " )}',
                                         %q@${3/(^[rwab+]+$)|.*/(?1:")/}@                                                      => '${}',
                                         %q@${3/(^[rwab+]+$)|.*/(?1:, ")/}@                                                    => '${}',
                                         %q@${3/^\s*$|(.*\S.*)/(?1:, )/}@                                                      => '${}',
                                         %q@${1:"${2:path/or/url/or/pipe}@                                                     => '${}',
                                         %q@${2:${1/([\w&&[^_]]+)|./\u$1/g}@                                                   => '${}',
                                         %q@${TM_SELECTED_TEXT/([\t ]*).*/$1/m}@                                               => '${}',
                                         %q@${1:"${2:path/to/file}"}${3/(^[rwab+]+$)|.*/(?1:, ")/}@                            => '${}',
                                         %q@${3:${TM_SELECTED_TEXT/(\A.*)|(.+)|\n\z/(?1:$0:(?2:\t$0))/g}@                      => '${}',
                                         %q@${1:${TM_FILENAME/(?:\A|_)([A-Za-z0-9]+)(?:\.rb)?/(?2::\u$1)/g}@                   => '${}',
                                         %q@${1/(^(?<var>\s*[a-z_][a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:|)/}@             => '${}',
                                         %q@${1/(^(?<var>\s*[a-z_][a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1: |)/}@            => '${}',
                                         %q@${1/(^(?<var>\s*[a-z_][a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:| )/}@            => '${}',
                                         %q@${2/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:|)/}@   => '${}',
                                         %q@${1/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:|)/}@   => '${}',
                                         %q@${2/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:|)/}@   => '${}',
                                         %q@${1/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:|)/}@   => '${}',
                                         %q@${2/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:| )/}@  => '${}',
                                         %q@${1/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:| )/}@  => '${}',
                                         %q@${2/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:| )/}@  => '${}',
                                         %q@${1/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:| )/}@  => '${}',
                                         %q@${2/(^(?<var>\s*(?:\*|\*?[a-z_])[a-zA-Z0-9_]*\s*)(,\g<var>)*,?\s*$)|.*/(?1:| )/}@  => '${}'
                                       }
                                      ]
end