Change Details

This is split from {T254989}. The idea is to highlight linebreaks in an indirect way, not by adding artificial `↲` characters, but by showing line numbers.

This is split from {T254989}. The idea is to highlight linebreaks in an indirect way, not by adding artificial `↲` characters, but by showing line numbers. **Investigation questions** 1. What exists in the current editors, both 2017 VE wikitext and 2010 wikitext editors? Is the feature there but disabled? Seems the functionality is there because the text editor in the module namespace already has line numbers. 2. Are there any particular blocks to enabling line numbers in VE? 3. What support for there is this in CodeMirror? Seems like it's part of the base functionality, not an add-on. Can it be de-coupled from code folding (out of scope)? Onwiki module editor with line numbering: {F31954496}

This is split from {T254989}. The idea is to highlight linebreaks in an indirect way, not by adding artificial `↲` characters, but by showing line numbers. **Investigation questions** 1. What exists in the current editors, both 2017 VE wikitext and 2010 wikitext editors? Is the feature there but disabled? Seems the functionality is there because the text editor in the module namespace already has line numbers. 2. Are there any particular blocks to enabling line numbers in VE? 3. What support for there is this in CodeMirror? Seems like it's part of the base functionality, not an add-on. Can it be de-coupled from code folding (out of scope)? Onwiki module editor with line numbering: {F31954496}