I am using Lubuntu 18.04.
When clicking right on a file the context menu of the file manager opens up. The file manager is PCmanFM, a great tool. I would like to remove programs from the list of suggested programs to open a certain file with.
For example a text file can be opened with Leafpad and with AbiWord in the default installation of Lubuntu 18, already.
I understand that the entries result from several ways of adding them. Adding such an entry seems to be easier then removing one.
Is there a documentation of the several ways on how to remove entries in context menu of PCmanFM?
There are different ways in which that list is created. Some applications ar associated by default (or they associate themselves when installed) to a certain file type or to folders. In this case they are listed in that file's or folder's mime-type line in
/usr/share/applications/mimeinfo.cacheor~/.local/share/applications/mimeinfo.cache.After selecting the "Open with" option in order to use a new application, that is then added in the same way to
~/.config/mimeapps.list.In order to completely remove an application from the list, remove it from the line corresponding to a specific mime-type in
/usr/share/applications/mimeinfo.cacheor~/.local/share/applications/mimeinfo.cacheor~/.config/mimeapps.list.In order to downgrade the application in the list (keep it but put a different one on top of the list), use again 'Open with' to select a new application or command — even using a command line option, as said here.
In this way one can also fix temporarily the Firefox bug of opening downloads folder with a media player or other unsuitable program.