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

```
<lexer>
```
```
  <config>
```
```
    <name>Bash</name>
```
```
    <alias>bash</alias>
```
```
    <alias>sh</alias>
```
```
    <alias>ksh</alias>
```
```
    <alias>zsh</alias>
```
```
    <alias>shell</alias>
```
```
    <filename>*.sh</filename>
```
```
    <filename>*.ksh</filename>
```
```
    <filename>*.bash</filename>
```
```
    <filename>*.ebuild</filename>
```
```
    <filename>*.eclass</filename>
```
```
    <filename>.env</filename>
```
```
    <filename>*.env</filename>
```
```
    <filename>*.exheres-0</filename>
```
```
    <filename>*.exlib</filename>
```
```
    <filename>*.zsh</filename>
```
```
    <filename>*.zshrc</filename>
```
```
    <filename>.bashrc</filename>
```
```
    <filename>bashrc</filename>
```
```
    <filename>.bash_*</filename>
```
```
    <filename>bash_*</filename>
```
```
    <filename>zshrc</filename>
```
```
    <filename>.zshrc</filename>
```
```
    <filename>PKGBUILD</filename>
```

    <mime_type>application/x-sh</mime_type>

    <mime_type>application/x-shellscript</mime_type>

```
    <analyse first="true" >
```

      <regex pattern="(?m)^#!.*/bin/(?:env |)(?:bash|zsh|sh|ksh)" score="1.0" />

```
    </analyse>
```
```
  </config>
```
```
  <rules>
```
```
    <state name="data">
```

      <rule pattern="(?s)\$?&#34;(\\\\|\\[0-7]+|\\.|[^&#34;\\$])*&#34;">

        <token type="LiteralStringDouble"/>

```
      </rule>
```
```
      <rule pattern="&#34;">
```

        <token type="LiteralStringDouble"/>

```
        <push state="string"/>
```
```
      </rule>
```

      <rule pattern="(?s)\$&#39;(\\\\|\\[0-7]+|\\.|[^&#39;\\])*&#39;">

        <token type="LiteralStringSingle"/>

```
      </rule>
```

      <rule pattern="(?s)&#39;.*?&#39;">

        <token type="LiteralStringSingle"/>

```
      </rule>
```
```
      <rule pattern=";">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="&amp;">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="\|">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern="\s+">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="\d+(?= |$)">
```
```
        <token type="LiteralNumber"/>
```
```
      </rule>
```

      <rule pattern="[^=\s\[\]{}()$&#34;\&#39;`\\&lt;&amp;|;]+">

```
        <token type="Text"/>
```
```
      </rule>
```
```
      <rule pattern="&lt;">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="string">
```
```
      <rule pattern="&#34;">
```

        <token type="LiteralStringDouble"/>

```
        <pop depth="1"/>
```
```
      </rule>
```

      <rule pattern="(?s)(\\\\|\\[0-7]+|\\.|[^&#34;\\$])+">

        <token type="LiteralStringDouble"/>

```
      </rule>
```
```
      <rule>
```
```
        <include state="interp"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="interp">
```
```
      <rule pattern="\$\(\(">
```
```
        <token type="Keyword"/>
```
```
        <push state="math"/>
```
```
      </rule>
```
```
      <rule pattern="\$\(">
```
```
        <token type="Keyword"/>
```
```
        <push state="paren"/>
```
```
      </rule>
```
```
      <rule pattern="\$\{#?">
```

        <token type="LiteralStringInterpol"/>

```
        <push state="curly"/>
```
```
      </rule>
```
```
      <rule pattern="\$[a-zA-Z_]\w*">
```
```
        <token type="NameVariable"/>
```
```
      </rule>
```

      <rule pattern="\$(?:\d+|[#$?!_*@-])">

```
        <token type="NameVariable"/>
```
```
      </rule>
```
```
      <rule pattern="\$">
```
```
        <token type="Text"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="paren">
```
```
      <rule pattern="\)">
```
```
        <token type="Keyword"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="root"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="math">
```
```
      <rule pattern="\)\)">
```
```
        <token type="Keyword"/>
```
```
        <pop depth="1"/>
```
```
      </rule>
```

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

```
        <token type="Operator"/>
```
```
      </rule>
```
```
      <rule pattern="\d+#\d+">
```
```
        <token type="LiteralNumber"/>
```
```
      </rule>
```
```
      <rule pattern="\d+#(?! )">
```
```
        <token type="LiteralNumber"/>
```
```
      </rule>
```
```
      <rule pattern="\d+">
```
```
        <token type="LiteralNumber"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="root"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="backticks">
```
```
      <rule pattern="`">
```

        <token type="LiteralStringBacktick"/>

```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="root"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="root">
```
```
      <rule>
```
```
        <include state="basic"/>
```
```
      </rule>
```
```
      <rule pattern="`">
```

        <token type="LiteralStringBacktick"/>

```
        <push state="backticks"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="data"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="interp"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="basic">
```

      <rule pattern="\b(if|fi|else|while|do|done|for|then|return|function|case|select|continue|until|esac|elif)(\s*)\b">

```
        <bygroups>
```
```
          <token type="Keyword"/>
```
```
          <token type="Text"/>
```
```
        </bygroups>
```
```
      </rule>
```

      <rule pattern="\b(alias|bg|bind|break|builtin|caller|cd|command|compgen|complete|declare|dirs|disown|echo|enable|eval|exec|exit|export|false|fc|fg|getopts|hash|help|history|jobs|kill|let|local|logout|popd|printf|pushd|pwd|read|readonly|set|shift|shopt|source|suspend|test|time|times|trap|true|type|typeset|ulimit|umask|unalias|unset|wait)(?=[\s)`])">

```
        <token type="NameBuiltin"/>
```
```
      </rule>
```
```
      <rule pattern="\A#!.+\n">
```
```
        <token type="CommentPreproc"/>
```
```
      </rule>
```
```
      <rule pattern="#.*(\S|$)">
```
```
        <token type="CommentSingle"/>
```
```
      </rule>
```
```
      <rule pattern="\\[\w\W]">
```

        <token type="LiteralStringEscape"/>

```
      </rule>
```

      <rule pattern="(\b\w+)(\s*)(\+?=)">

```
        <bygroups>
```
```
          <token type="NameVariable"/>
```
```
          <token type="Text"/>
```
```
          <token type="Operator"/>
```
```
        </bygroups>
```
```
      </rule>
```
```
      <rule pattern="[\[\]{}()=]">
```
```
        <token type="Operator"/>
```
```
      </rule>
```
```
      <rule pattern="&lt;&lt;&lt;">
```
```
        <token type="Operator"/>
```
```
      </rule>
```

      <rule pattern="&lt;&lt;-?\s*(\&#39;?)\\?(\w+)[\w\W]+?\2">

```
        <token type="LiteralString"/>
```
```
      </rule>
```
```
      <rule pattern="&amp;&amp;|\|\|">
```
```
        <token type="Operator"/>
```
```
      </rule>
```
```
    </state>
```
```
    <state name="curly">
```
```
      <rule pattern="\}">
```

        <token type="LiteralStringInterpol"/>

```
        <pop depth="1"/>
```
```
      </rule>
```
```
      <rule pattern=":-">
```
```
        <token type="Keyword"/>
```
```
      </rule>
```
```
      <rule pattern="\w+">
```
```
        <token type="NameVariable"/>
```
```
      </rule>
```

      <rule pattern="[^}:&#34;\&#39;`$\\]+">

```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule pattern=":">
```
```
        <token type="Punctuation"/>
```
```
      </rule>
```
```
      <rule>
```
```
        <include state="root"/>
```
```
      </rule>
```
```
    </state>
```
```
  </rules>
```
```
</lexer>
```