Oberon0 syntax highlighter for gtksourceview-3.0 Place this file in ~/.local/share/gtksourceview-3.0/language-specs/ Limitation: does not support nested comments.

oberon0.lang

<?xml version="1.0" encoding="UTF-8"?>
<language id="oberon0" _name="Oberon0" version="2.0" _section="Sources">
  <metadata>
    <property name="globs">*.ob0;*.ob</property>
  </metadata>

  <styles>
    <style id="comment"           _name="Comment"             map-to="def:comment"/>
    <style id="error"             _name="Error"               map-to="def:error"/>
    <style id="string"            _name="String"              map-to="def:string"/>
    <style id="included-file"     _name="Included File"       map-to="def:string"/>
    <style id="char"              _name="Character"           map-to="def:character"/>
    <style id="keyword"           _name="Keyword"             map-to="def:keyword"/>
    <style id="type"              _name="Data Type"           map-to="def:type"/>
    <style id="storage-class"     _name="Storage Class"       map-to="def:type"/>
    <style id="escaped-character" _name="Escaped Character"   map-to="def:special-char"/>
    <style id="floating-point"    _name="Floating point number" map-to="def:floating-point"/>
    <style id="decimal"           _name="Decimal number"      map-to="def:decimal"/>
    <style id="octal"             _name="Octal number"        map-to="def:base-n-integer"/>
    <style id="hexadecimal"       _name="Hexadecimal number"  map-to="def:base-n-integer"/>
    <style id="boolean"           _name="Boolean value"       map-to="def:boolean"/>
  </styles>

  <definitions>

    <context id="comment-multiline" style-ref="comment" class-disabled="no-spell-check">
      <start>\(\*</start>
      <end>\*\)</end>
      <include>
        <context ref="def:in-comment"/>
      </include>
    </context>

    <context id="quoted-string" style-ref="string" end-at-line-end="true" class-disabled="no-spell-check">
      <start>"</start>
      <end>"</end>
      <include>
        <context ref="def:line-continue"/>
      </include>
    </context>

    <context id="char-string" style-ref="char">
      <match extended="true">
        (?&lt;![\w\.])
        [0-9][0-9A-F]*X
        (?![\w\.])
      </match>
    </context>

    <context id="hexadecimal" style-ref="hexadecimal">
      <match extended="true">
        (?&lt;![\w\.])
        [0-9][0-9A-F]*H
        (?![\w\.])
      </match>
    </context>

    <context id="decimal" style-ref="decimal">
      <match extended="true">
        (?&lt;![\w\.])
        [0-9]+
        (?![\w\.])
      </match>
    </context>

    <context id="boolean" style-ref="boolean">
      <match extended="true">
        (?&lt;![\w\.])
        (TRUE|FALSE)
        (?![\w\.])
      </match>
    </context>

    <context id="keywords" style-ref="keyword">
      <keyword>ARRAY</keyword>
      <keyword>BEGIN</keyword>
      <keyword>BY</keyword>
      <keyword>CASE</keyword>
      <keyword>CONST</keyword>
      <keyword>DIV</keyword>
      <keyword>DO</keyword>
      <keyword>ELSE</keyword>
      <keyword>ELSIF</keyword>
      <keyword>END</keyword>
      <keyword>FALSE</keyword>
      <keyword>FOR</keyword>
      <keyword>IF</keyword>
      <keyword>IMPORT</keyword>
      <keyword>IN</keyword>
      <keyword>IS</keyword>
      <keyword>MOD</keyword>
      <keyword>MODULE</keyword>
      <keyword>NIL</keyword>
      <keyword>OF</keyword>
      <keyword>OR</keyword>
      <keyword>POINTER</keyword>
      <keyword>PROCEDURE</keyword>
      <keyword>RECORD</keyword>
      <keyword>REPEAT</keyword>
      <keyword>RETURN</keyword>
      <keyword>THEN</keyword>
      <keyword>TO</keyword>
      <keyword>TYPE</keyword>
      <keyword>UNTIL</keyword>
      <keyword>VAR</keyword>
      <keyword>WHILE</keyword>
    </context>

    <context id="types" style-ref="type">
      <keyword>BOOLEAN</keyword>
      <keyword>CHAR</keyword>
      <keyword>INTEGER</keyword>
    </context>

    <context id="builtin-function" style-ref="keyword">
      <keyword>CHR</keyword>
      <keyword>COPY</keyword>
      <keyword>LEN</keyword>
      <keyword>ORD</keyword>
    </context>

    <context id="oberon0" class="no-spell-check">
      <include>
        <context ref="comment-multiline"/>
        <context ref="quoted-string"/>
        <context ref="char-string"/>
        <context ref="hexadecimal"/>
        <context ref="decimal"/>
        <context ref="boolean"/>
        <context ref="keywords"/>
        <context ref="types"/>
        <context ref="builtin-function"/>
      </include>
    </context>

  </definitions>
</language>