Background
In working on T348019: Port MediaWiki mode to CodeMirror 6 stream-parser, I have hit a wall with one particular issue where identical adjacent tokens unnecessarily have separate <span> tags. This does not visually produce any issue, but the excess markup could pose a performance problem.
I tried reproducing the issue with CodeMirror 6's "Try" feature, but in doing so I believe I have concluded this is not an issue with CM6 but with my code.
Steps to replicate the issue (include links if applicable):
- Check out r972438
- Start a new page with CM6 enabled (i.e. ?cm6enable=1)
- Add only the content https://wikimedia.org
What happens?:
The markup is as follows:
<div class="cm-line"> <span class="cm-mw-free-extlink-protocol">https://</span> <span class="cm-mw-free-extlink">wikimedia.</span> <span class="cm-mw-free-extlink">org</span> </div>
What should have happened instead?:
The markup should be:
<div class="cm-line"> <span class="cm-mw-free-extlink-protocol">https://</span> <span class="cm-mw-free-extlink">wikimedia.org</span> </div>
Software version
CodeMirror with r972438 checked out
Other information (browser name/version, screenshots, etc.):
The above is just one example. This happens in many cases, such as table headings:
{| class="wikitable"produces:
<div class="cm-line">
<span class="cm-mw-table-bracket">{|</span>
<span class="cm-mw-table-definition">class</span>
<span class="cm-mw-table-definition">="wikitable"</span>
</div>There should be just one span for .cm-mw-table-definition.