Viewing github.com/alecthomas/chroma/lexers/embedded/nasm.xml

```
<lexer>
```
```
  <config>
```
```
    <name>NASM</name>
```
```
    <alias>nasm</alias>
```
```
    <filename>*.asm</filename>
```
```
    <filename>*.ASM</filename>
```
```
    <filename>*.nasm</filename>
```
```
    <mime_type>text/x-nasm</mime_type>
```

    <case_insensitive>true</case_insensitive>

    <priority>1.0</priority> <!-- TASM uses the same file endings, but TASM is not as common as NASM, so we prioritize NASM higher by default. -->

```
  </config>
```
```
  <rules>
```
```
    <state name="punctuation">
```
```
      <rule pattern="[,():\[\]]+">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```

      <rule pattern="[&amp;|^&lt;&gt;+*/%~-]+">

```
        <token type="Operator"/>
```
```
      </rule>
```
```
      <rule pattern="[$]+">
```

        <token type="KeywordConstant"/>

```
      </rule>
```
```
      <rule pattern="seg|wrt|strict">
```
```
        <token type="OperatorWord"/>
```
```
      </rule>
```
```
      <rule pattern="byte|[dq]?word">
```
```
        <token type="KeywordType"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="root">
```
```
      <rule pattern="^\s*%">
```
```
        <token type="CommentPreproc"/>
```
```
        <push state="preproc"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```

      <rule pattern="[a-z$._?][\w$.?#@~]*:">

```
        <token type="NameLabel"/>
```
```
      </rule>
```

      <rule pattern="([a-z$._?][\w$.?#@~]*)(\s+)(equ)">

```
        <bygroups>
```
```
          <token type="NameConstant"/>
```

          <token type="KeywordDeclaration"/>

          <token type="KeywordDeclaration"/>

```
        </bygroups>
```

        <push state="instruction-args"/>

```
      </rule>
```

      <rule pattern="BITS|USE16|USE32|SECTION|SEGMENT|ABSOLUTE|EXTERN|GLOBAL|ORG|ALIGN|STRUC|ENDSTRUC|COMMON|CPU|GROUP|UPPERCASE|IMPORT|EXPORT|LIBRARY|MODULE">

```
        <token type="Keyword"/>
```

        <push state="instruction-args"/>

```
      </rule>
```

      <rule pattern="(?:res|d)[bwdqt]|times">

        <token type="KeywordDeclaration"/>

        <push state="instruction-args"/>

```
      </rule>
```

      <rule pattern="[a-z$._?][\w$.?#@~]*">

```
        <token type="NameFunction"/>
```

        <push state="instruction-args"/>

```
      </rule>
```
```
      <rule pattern="[\r\n]+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="instruction-args">
```

      <rule pattern="&#34;(\\&#34;|[^&#34;\n])*&#34;|&#39;(\\&#39;|[^&#39;\n])*&#39;|`(\\`|[^`\n])*`">

```
        <token type="LiteralString"/>
```
```
      </rule>
```

      <rule pattern="(?:0x[0-9a-f]+|$0[0-9a-f]*|[0-9]+[0-9a-f]*h)">

        <token type="LiteralNumberHex"/>

```
      </rule>
```
```
      <rule pattern="[0-7]+q">
```

        <token type="LiteralNumberOct"/>

```
      </rule>
```
```
      <rule pattern="[01]+b">
```

        <token type="LiteralNumberBin"/>

```
      </rule>
```

      <rule pattern="[0-9]+\.e?[0-9]+">

        <token type="LiteralNumberFloat"/>

```
      </rule>
```
```
      <rule pattern="[0-9]+">
```

        <token type="LiteralNumberInteger"/>

```
      </rule>
```
```
      <rule>
```
```
        <include state="punctuation"/>
```
```
      </rule>
```

      <rule pattern="r[0-9][0-5]?[bwd]|[a-d][lh]|[er]?[a-d]x|[er]?[sb]p|[er]?[sd]i|[c-gs]s|st[0-7]|mm[0-7]|cr[0-4]|dr[0-367]|tr[3-7]">

```
        <token type="NameBuiltin"/>
```
```
      </rule>
```

      <rule pattern="[a-z$._?][\w$.?#@~]*">

```
        <token type="NameVariable"/>
```
```
      </rule>
```
```
      <rule pattern="[\r\n]+">
```
```
        <token type="Text"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="whitespace"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="preproc">
```
```
      <rule pattern="[^;\n]+">
```
```
        <token type="CommentPreproc"/>
```
```
      </rule>
```
```
      <rule pattern=";.*?\n">
```
```
        <token type="CommentSingle"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule pattern="\n">
```
```
        <token type="CommentPreproc"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="whitespace">
```
```
      <rule pattern="\n">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="[ \t]+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern=";.*">
```
```
        <token type="CommentSingle"/>
```
```
      </rule>
```
```
    </state>
```
```
  </rules>
```
```
</lexer>
```