Description
rust-analyzer features a warning when a rename will cause conflict, that is will change the meaning of the program. However, the current UI is awful. I'd like to implement a better UI for this, but this needs support from VSCode. I imagine other language clients can also use this.
The UI I want is for rename that cause conflicts to show the rename preview, with conflicting variables highlighted in red, and with an option for the user to approve/cancel.
The way I imagine it will be implemented is by adding a new method to WorkspaceEdit, insertWarning(uri: Uri, range: Range, description: string, label: string, iconPath?: IconPath). The warnings will be grouped by label, similar to WorkspaceEditEntryMetadata.
I can implement this myself, but I wanted to hear if this will be accepted.