_type: ExprLet
attrs:
  s1:
    _type: ExprString
    value: "This is an indented multi-line string\nliteral.  An amount of whitespace\
      \ at\nthe start of each line matching the minimum\nindentation of all lines\
      \ in the string\nliteral together will be removed.  Thus,\nin this case four\
      \ spaces will be\nstripped from each line, even though\n  THIS LINE is indented\
      \ six spaces.\n\nAlso, empty lines don't count in the\ndetermination of the\
      \ indentation level (the\nprevious empty line has indentation 0, but\nit doesn't\
      \ matter).\n"
  s10:
    _type: ExprString
    value: ''
  s11:
    _type: ExprString
    value: ''
  s12:
    _type: ExprString
    value: ''
  s13:
    _type: ExprConcatStrings
    es:
      - _type: ExprString
        value: "start on network-interfaces\n\nstart script\n\n  rm -f /var/run/opengl-driver\n\
          \  "
      - _type: ExprIf
        cond:
          _type: ExprVar
          value: 'true'
        else:
          _type: ExprIf
          cond:
            _type: ExprVar
            value: 'true'
          else:
            _type: ExprString
            value: ''
          then:
            _type: ExprString
            value: ln -sf 456 /var/run/opengl-driver
        then:
          _type: ExprString
          value: ln -sf 123 /var/run/opengl-driver
      - _type: ExprString
        value: "\n\n  rm -f /var/log/slim.log\n   \nend script\n\nenv SLIM_CFGFILE="
      - _type: ExprString
        value: abc
      - _type: ExprString
        value: '

          env SLIM_THEMESDIR='
      - _type: ExprString
        value: def
      - _type: ExprString
        value: "\nenv FONTCONFIG_FILE=/etc/fonts/fonts.conf  \t\t\t\t# !!! cleanup\n\
          env XKB_BINDIR="
      - _type: ExprString
        value: foo
      - _type: ExprString
        value: "/bin         \t\t\t\t# Needed for the Xkb extension.\nenv LD_LIBRARY_PATH="
      - _type: ExprString
        value: libX11
      - _type: ExprString
        value: '/lib:'
      - _type: ExprString
        value: libXext
      - _type: ExprString
        value: '/lib:/usr/lib/          # related to xorg-sys-opengl - needed to load
          libglx for (AI)GLX support (for compiz)


          '
      - _type: ExprIf
        cond:
          _type: ExprVar
          value: 'true'
        else:
          _type: ExprIf
          cond:
            _type: ExprVar
            value: 'true'
          else:
            _type: ExprString
            value: ''
          then:
            _type: ExprConcatStrings
            es:
              - _type: ExprString
                value: env XORG_DRI_DRIVER_PATH=
              - _type: ExprString
                value: mesa
              - _type: ExprString
                value: /lib/modules/dri
            forceString: true
        then:
          _type: ExprConcatStrings
          es:
            - _type: ExprString
              value: env XORG_DRI_DRIVER_PATH=
            - _type: ExprString
              value: nvidiaDrivers
            - _type: ExprString
              value: /X11R6/lib/modules/drivers/
          forceString: true
      - _type: ExprString
        value: " \n\nexec "
      - _type: ExprString
        value: slim
      - _type: ExprString
        value: '/bin/slim

          '
    forceString: true
  s14:
    _type: ExprString
    value: "Escaping of ' followed by ': ''\nEscaping of $ followed by {: ${\nAnd\
      \ finally to interpret \\n etc. as in a string: \n, \r, \t.\n"
  s15:
    _type: ExprLet
    attrs:
      x:
        _type: ExprString
        value: bla
    body:
      _type: ExprConcatStrings
      es:
        - _type: ExprString
          value: 'foo

            '''
        - _type: ExprVar
          value: x
        - _type: ExprString
          value: '''

            bar

            '
      forceString: true
  s16:
    _type: ExprString
    value: 'cut -d $''\t'' -f 1

      '
  s17:
    _type: ExprConcatStrings
    es:
      - _type: ExprConcatStrings
        es:
          - _type: ExprString
            value: ending dollar $
          - _type: ExprString
            value: $
        forceString: false
      - _type: ExprString
        value: '

          '
    forceString: false
  s18:
    _type: ExprString
    value: "    Lines without any indentation effectively disable the indentation\n\
      \    stripping for the entire string:\n\n        cat >$out/foo/data <<EOF\n\
      \        lasjdöaxnasd\nasdom 12398\nä\"§Æẞ¢«»”alsd\nEOF\n"
  s19:
    _type: ExprString
    value: "Empty lines with a bit of whitespace don't affect the indentation calculation:\n\
      \nAnd empty lines with more whitespace will have whitespace in the string:\n\
      \          \nUnless it's the last line:\n"
  s2:
    _type: ExprString
    value: "If the string starts with whitespace\n  followed by a newline, it's stripped,\
      \ but\n  that's not the case here. Two spaces are\n  stripped because of the\
      \ \"  \" at the start. \n"
  s20:
    _type: ExprString
    value: "  Indentation stripping\n  must not be impressed by\nthe last line not\
      \ being empty"
  s21:
    _type: ExprString
    value: "\t  Nor by people\n    weirdly mixing tabs\n\tand spaces\n\t"
  s3:
    _type: ExprString
    value: 'This line is indented

      a bit further.

      '
  s4:
    _type: ExprConcatStrings
    es:
      - _type: ExprString
        value: 'Anti-quotations, like '
      - _type: ExprIf
        cond:
          _type: ExprVar
          value: 'true'
        else:
          _type: ExprString
          value: not so
        then:
          _type: ExprString
          value: so
      - _type: ExprString
        value: ', are

          also allowed.

          '
    forceString: true
  s5:
    _type: ExprConcatStrings
    es:
      - _type: ExprString
        value: '  The \ is not special here.

          '' can be followed by any character except another '', e.g. ''x''.

          Likewise for $, e.g. $$ or $varName.

          But '' followed by '' is special, as is $ followed by {.

          If you want them, use anti-quotations: '
      - _type: ExprString
        value: ''''''
      - _type: ExprString
        value: ', '
      - _type: ExprString
        value: ${
      - _type: ExprString
        value: '.

          '
    forceString: true
  s6:
    _type: ExprString
    value: "   Tabs are not interpreted as whitespace (since we can't guess\n   what\
      \ tab settings are intended), so don't use them.\n\tThis line starts with a\
      \ space and a tab, so only one\n   space will be stripped from each line.\n"
  s7:
    _type: ExprString
    value: 'Also note that if the last line (just before the closing '' '')

      consists only of whitespace, it''s ignored.  But here there is

      some non-whitespace stuff, so the line isn''t removed. '
  s8:
    _type: ExprConcatStrings
    es:
      - _type: ExprString
        value: ''
      - _type: ExprString
        value: '

          This shows a hacky way to preserve an empty line after the start.

          But there''s no reason to do so: you could just repeat the empty

          line.

          '
    forceString: true
  s9:
    _type: ExprConcatStrings
    es:
      - _type: ExprString
        value: ''
      - _type: ExprString
        value: "  Similarly you can force an indentation level,\n  in this case to\
          \ 2 spaces.  This works because the anti-quote\n  is significant (not whitespace).\n"
    forceString: true
body:
  _type: ExprConcatStrings
  es:
    - _type: ExprConcatStrings
      es:
        - _type: ExprConcatStrings
          es:
            - _type: ExprConcatStrings
              es:
                - _type: ExprConcatStrings
                  es:
                    - _type: ExprConcatStrings
                      es:
                        - _type: ExprConcatStrings
                          es:
                            - _type: ExprConcatStrings
                              es:
                                - _type: ExprConcatStrings
                                  es:
                                    - _type: ExprConcatStrings
                                      es:
                                        - _type: ExprConcatStrings
                                          es:
                                            - _type: ExprConcatStrings
                                              es:
                                                - _type: ExprConcatStrings
                                                  es:
                                                    - _type: ExprConcatStrings
                                                      es:
                                                        - _type: ExprConcatStrings
                                                          es:
                                                            - _type: ExprConcatStrings
                                                              es:
                                                                - _type: ExprConcatStrings
                                                                  es:
                                                                    - _type: ExprConcatStrings
                                                                      es:
                                                                        - _type: ExprConcatStrings
                                                                          es:
                                                                            - _type: ExprConcatStrings
                                                                              es:
                                                                                - _type: ExprVar
                                                                                  value: s1
                                                                                - _type: ExprVar
                                                                                  value: s2
                                                                              forceString: false
                                                                            - _type: ExprVar
                                                                              value: s3
                                                                          forceString: false
                                                                        - _type: ExprVar
                                                                          value: s4
                                                                      forceString: false
                                                                    - _type: ExprVar
                                                                      value: s5
                                                                  forceString: false
                                                                - _type: ExprVar
                                                                  value: s6
                                                              forceString: false
                                                            - _type: ExprVar
                                                              value: s7
                                                          forceString: false
                                                        - _type: ExprVar
                                                          value: s8
                                                      forceString: false
                                                    - _type: ExprVar
                                                      value: s9
                                                  forceString: false
                                                - _type: ExprVar
                                                  value: s10
                                              forceString: false
                                            - _type: ExprVar
                                              value: s11
                                          forceString: false
                                        - _type: ExprVar
                                          value: s12
                                      forceString: false
                                    - _type: ExprVar
                                      value: s13
                                  forceString: false
                                - _type: ExprVar
                                  value: s14
                              forceString: false
                            - _type: ExprVar
                              value: s15
                          forceString: false
                        - _type: ExprVar
                          value: s16
                      forceString: false
                    - _type: ExprVar
                      value: s17
                  forceString: false
                - _type: ExprVar
                  value: s18
              forceString: false
            - _type: ExprVar
              value: s19
          forceString: false
        - _type: ExprVar
          value: s20
      forceString: false
    - _type: ExprVar
      value: s21
  forceString: false