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Add support for systemd unit files

Andreas Gratzer requested to merge andreasgr/syntax-highlighting:systemd_unit into master

An attempt on systemd unit files.

Some Features

  • The highlighting definition file is formatted using xmllint --format.
  • Highlighting of comments, supporting existing Alerts.
  • Styles for section headers and option names are similar to existing INI-file highlighting.
  • Support for folding of sections.
  • Only valid sections are highlighted. Invalid sections are ignored as a whole.
  • Sections starting with X- are recognized as extension section and highlighted in a specific style as a whole.
  • Only options valid within a specific section are highlighted. Invalid options are ignored, including options only valid in some other section.
  • Options starting with X- are recognized as extension option and highlighted in a specific style as a whole.
  • Highlighting of globs/wildcards where applicable.
  • Highlighting of specifiers like %h, %U where applicable.
  • Highlighting of escapes like \,, \b, \x0A, \012 in command lines.
  • Highlighting of valid values for many options.
  • Valid option names within a specific section, values for specific option types, valid specifiers, escapes, ... are extracted from systemd source files.

Example Screenshot

screenshot

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