When "rename file" dialog box pops up, file name text gets selected but without the extension part. This is useful for file, true. But this approach is wrong in case of folders. Generally they are not having extension but PCManFM behaves like if they were.
Proposed solution: select whole text when renaming folders.
Anonymous
Thank you for a suggestion. Unfortunately this is not possible to implement with current API so let do it on next major release.