do not include the heredoc delemiters as part of the string

src/languages/bash.js

@@ -31,7 +31,9 @@ export default function(hljs) {
   const HERE_DOC = hljs.END_SAME_AS_BEGIN({
     className: 'string',
     begin: /<<-?\s*(\w+)/,
-    end: /(\w+)/
+    end: /(\w+)/,
+    excludeBegin: true,
+    excludeEnd:true
   });
   const QUOTE_STRING = {
     className: 'string',

test/markup/bash/strings.expect.txt

@@ -1,3 +1,14 @@
 SCRIPT_DIR=<span class="hljs-string">&quot;<span class="hljs-subst">$( cd <span class="hljs-string">&quot;<span class="hljs-subst">$( dirname <span class="hljs-string">&quot;<span class="hljs-variable">${BASH_SOURCE[0]}</span>&quot;</span> )</span>&quot;</span> &gt;/dev/null 2&gt;&amp;1 &amp;&amp; pwd )</span>&quot;</span>
 TLS_DIR=<span class="hljs-string">&quot;<span class="hljs-variable">$SCRIPT_DIR</span>/../src/main/resources/tls&quot;</span>
 ROOT_DIR=<span class="hljs-string">&quot;<span class="hljs-variable">$SCRIPT_DIR</span>/..&quot;</span>
+
+jshell -s - &lt;&lt; EOF<span class="hljs-string">
+System.out.printf(&quot;Procs: %s%n&quot;, getdata())
+</span>EOF
+
+jshell -s - &lt;&lt;&lt;<span class="hljs-string">&#x27;System.out.printf(&quot;Procs: %s%n&quot;, getdata())&#x27;</span>
+
+cat &lt;&lt;&lt; <span class="hljs-string">&#x27;$VARIABLE&#x27;</span>
+cat &lt;&lt;&lt; <span class="hljs-string">&quot;<span class="hljs-variable">$VARIABLE</span>&quot;</span>
+cat &lt;&lt;&lt; <span class="hljs-variable">$VARIABLE</span>
+cat &lt;&lt;&lt; `<span class="hljs-variable">$VARIABLE</span>`

test/markup/bash/strings.txt

@@ -1,3 +1,14 @@
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 TLS_DIR="$SCRIPT_DIR/../src/main/resources/tls"
 ROOT_DIR="$SCRIPT_DIR/.."
+
+jshell -s - << EOF
+System.out.printf("Procs: %s%n", getdata())
+EOF
+
+jshell -s - <<<'System.out.printf("Procs: %s%n", getdata())'
+
+cat <<< '$VARIABLE'
+cat <<< "$VARIABLE"
+cat <<< $VARIABLE
+cat <<< `$VARIABLE`