Topic on Extension talk:CodeMirror

Reported at https://discuss.codemirror.net/t/cm5-no-cursor-before-bookmark/3761.

If you do markText with option collapsed=true (with replacedWith), and place the cursor just before the arrows marking collapsed range, the cursor won't be showing.

Example code (part above the empty line run once, markText to test range, clear to remove mark):

var text = document.createTextNode('\u2194');
widget = document.createElement("span");
widget.appendChild(text);
widget.className = "CodeMirror-foldmarker";
var editor = $(".CodeMirror")

editor[0].CodeMirror.doc.markText({line:0,ch:1},{line:1,ch:10},{collapsed:true,replacedWith:widget})
editor[0].CodeMirror.getAllMarks()[0].clear()

pl.wikipedia.org

I'm afraid we aren't able to provide support for the upstream CodeMirror library.

I don't think it's entirely the CM fault, it could be something either in the changed CM library code, mediawiki mode, or in mediawiki css (or it's just a matter of config option?).

Because if you load mode manually, the cursor in front of the range is shown.

This works (in code editor without CodeMirror present - disable highlighting and refresh the editor by F5; use editor. in place of editor[0].CodeMirror. with markText line above):

mw.loader.load("ext.CodeMirror")
mw.loader.load("ext.CodeMirror.lib.mode.htmlmixed")
var editor = CodeMirror.fromTextArea(document.getElementById("wpTextbox1"),{mode:"htmlmixed"})

mw.loader.load("ext.CodeMirror")
mw.loader.load("ext.CodeMirror.mode.mediawiki")
var editor = CodeMirror.fromTextArea(document.getElementById("wpTextbox1"),{mode:"mediawiki",mwConfig:mw.config.get( 'extCodeMirrorConfig' )})

But if you switch normally to CM editor by the button, the cursor in front of the range won't be shown (move cursor by cursor keys, mouse isn't very reliable).

This is probably a CM bug (with inputStyle: "contenteditable"), like Thiemo said.

CM5: No cursor before bookmark.