Fix bug in Leaf keyword highlighting

CHANGES.md

@@ -16,6 +16,7 @@ Core Grammars:
 - fix(ex) adds support for `?'` char literal and missing `defguardp` keyword [Kevin Bloch][]
 - fix(diff) fix unified diff hunk header regex to allow unpaired numbers [Chris Wilson][]
 - enh(php) support single line and hash comments in attributes, constructor and functions [Antoine Musso][]
+- fix(leaf) fix bug in Leaf keyword highlighting [Francesco Paolo Severino][]
 - enh(json) add json5 support [Kerry Shetline][]
 
 Documentation:
@@ -31,6 +32,7 @@ CONTRIBUTORS
 [Chris Wilson]: https://github.com/sushicw
 [Antoine Musso]: https://github.com/hashar
 [Chester Moses]: https://github.com/Chester-Moses-HCL
+[Francesco Paolo Severino]: https://github.com/fpseverino
 [SungHyun Kim]: https://github.com/witch-factory
 [Adam Lui]: https://github.com/adamlui
 [Sebastiaan Speck]: https://github.com/sebastiaanspeck

src/languages/leaf.js

@@ -26,7 +26,7 @@ export default function(hljs) {
       },
       {
         scope: 'keyword',
-        match: LITERALS.join("|"),
+        match: LITERALS.map(lit => `\\b${lit}\\b`).join("|"),
       },
       {
         scope: 'variable',

test/markup/leaf/default.expect.txt

@@ -7,7 +7,7 @@
 
 <span class="hljs-punctuation">#</span><span class="hljs-keyword">if</span><span class="hljs-params">(<span class="hljs-keyword">count</span><span class="hljs-params">(<span class="hljs-variable">visit</span>)</span> <span class="hljs-operator">==</span> 1)</span><span class="hljs-punctuation">:</span>
     Hello new user!
-<span class="hljs-punctuation">#</span><span class="hljs-keyword">elseif</span><span class="hljs-params">(<span class="hljs-variable">title</span> <span class="hljs-operator">==</span> <span class="hljs-string">&quot;Welcome back!&quot;</span>)</span><span class="hljs-punctuation">:</span>
+<span class="hljs-punctuation">#</span><span class="hljs-keyword">elseif</span><span class="hljs-params">(<span class="hljs-variable">index</span> <span class="hljs-operator">==</span> <span class="hljs-string">&quot;Welcome back!&quot;</span>)</span><span class="hljs-punctuation">:</span>
     Hello old user
 <span class="hljs-punctuation">#</span><span class="hljs-keyword">else</span><span class="hljs-punctuation">:</span>
     Unexpected page!

test/markup/leaf/default.txt

@@ -7,7 +7,7 @@
 
 #if(count(visit) == 1):
     Hello new user!
-#elseif(title == "Welcome back!"):
+#elseif(index == "Welcome back!"):
     Hello old user
 #else:
     Unexpected page!