Yannick, Regarding the long file issue (/es/appendices/ini.xml).
I spent some time on the codemirror source and find that ... The options lineNumberDelay and lineNumberTime are not valid for the case when option "textWrapping = false" (which is our FilePanel default). The operation for adding lineNumber to the editor is just a simple while-loop. This while-looop is the cause of freezing the browser when opening a long file like the /es/appendices/ini.xml There are 2 solutions.. [1] when a long file is detected, disable the line number in the editor... tested ... just look not nice without the line numbers [2] modify the while loop so that the options lineNumberDelay and lineNumberTime are valid (using setTimeout which "sleep" the while loop)... tested ... look nice but have drawback. Drawback for solu-2: When scrolling to the bottom immediately after the open (ctrl + end), line numbers displayed are incorrect. This issue will also occur for "textWrapping = true" line-number implementation (u may see the effect by simply modify /js/ux/others/main_specific/Ext.ux.CodeMirror.js line 145 - textWrapping: true and scroll to bottom after open immediately) Kindly let me know ... which solu we should use. kschan.