diff --git a/demo/src/main/java/org/jline/demo/Repl.java b/demo/src/main/java/org/jline/demo/Repl.java
index 069e136ff..d9d0743f5 100644
--- a/demo/src/main/java/org/jline/demo/Repl.java
+++ b/demo/src/main/java/org/jline/demo/Repl.java
@@ -284,15 +284,21 @@ public static void main(String[] args) {
             systemRegistry.addCompleter(scriptEngine.getScriptCompleter());
             systemRegistry.setScriptDescription(scriptEngine::scriptDescription);
             //
-            // LineReader
+            // Command line highlighter
             //
             Path jnanorc = configPath.getConfig("jnanorc");
             SyntaxHighlighter commandHighlighter = SyntaxHighlighter.build(jnanorc,"COMMAND");
             SyntaxHighlighter argsHighlighter = SyntaxHighlighter.build(jnanorc,"ARGS");
             SyntaxHighlighter groovyHighlighter = SyntaxHighlighter.build(jnanorc,"Groovy");
             SystemHighlighter highlighter = new SystemHighlighter(commandHighlighter, argsHighlighter, groovyHighlighter);
+            if (!OSUtils.IS_WINDOWS) {
+                highlighter.setSpecificHighlighter("!", Nano.SyntaxHighlighter.build(jnanorc, "SH-REPL"));
+            }
             highlighter.addFileHighlight("nano", "less", "slurp");
             highlighter.addFileHighlight("groovy", "classloader", Arrays.asList("-a", "--add"));
+            //
+            // LineReader
+            //
             LineReader reader = LineReaderBuilder.builder()
                     .terminal(terminal)
                     .completer(systemRegistry.completer())
diff --git a/demo/src/main/scripts/sh-repl.nanorc b/demo/src/main/scripts/sh-repl.nanorc
new file mode 100644
index 000000000..53f911f47
--- /dev/null
+++ b/demo/src/main/scripts/sh-repl.nanorc
@@ -0,0 +1,19 @@
+## Groovy REPL sh commands highlight.
+##
+syntax "SH-REPL"
+
+## keywords:
+color green "\<(case|do|done|elif|else|esac|fi|for|function|if|in|select|then|time|until|while)\>"
+color green "(\{|\}|\(|\)|\;|\]|\[|`|\\|\$|<|>|!|=|&|\|)"
+color green "-[Lldefgrtuwx]+\>"
+color green "-(eq|ne|gt|lt|ge|le|s|n|z)\>"
+## builtins:
+color brightblue "\<(alias|bg|bind|break|builtin|caller|cd|command|compgen|complete|compopt|continue|declare|dirs|disown|echo|enable|eval|exec|exit|export|false|fc|fg|getopts|hash|help|history|jobs|kill|let|local|logout|mapfile|popd|printf|pushd|pwd|read|readarray|readonly|return|set|shift|shopt|source|suspend|test|times|trap|true|type|typeset|ulimit|umask|unalias|unset|wait)\>"
+## not buitins:
+color brightblue "\<(cat|chmod|chown|cp|env|grep|install|ln|make|mkdir|mv|rm|sed|tar|touch|ls)\>"
+icolor brightgreen "^\s+[0-9A-Z_]+\s+\(\)"
+icolor brightred "\$\{?[0-9A-Z_!@#$*?-]+\}?"
+color brightyellow ""(\\.|[^"])*"" "'(\\.|[^'])*'"
+color cyan "^([[:space:]])*#.*$"
+color cyan start="/\*" end="\*/"
+# color ,green "[[:space:]]+$"