This modification achieves that, for example, when users press Shift+F4 and paste the path of a local existent file like /etc/passwd, that file gets edited (instead of not getting opened and the user not getting informed about it). It also manages the cases of remote files.

FIXED: [ 417319 ] Problems when using Shift+F4 to open a local file that exists, or a remote folder or remote file that exists
BUG: 417319

Using Shift+F4 to try to open a:

• local file that exists: /etc/passwd
• local file that doesn't exist: /tmp/nonexistent
• local folder that exists: /etc (Krusader has to say "You cannot edit a folder."
• remote file that exists: smb://user@IP_ADDRESS/PATH/EXISTENT_FILE
• remote file that doesn't exist : smb://user@IP_ADDRESS/NONEXISTENT
• remote file that exists: fish://user@IP_ADDRESS:PORT/PATH/EXISTENT_FILE
• remote file that doesn't exist : fish://user@IP_ADDRESS:PORT/NONEXISTENT
• remote folder that exists: smb://user@IP_ADDRESS/PATH/EXISTENT_FOLDER
• remote folder that exists: fish://user@IP_ADDRESS:PORT/PATH/EXISTENT_FOLDER

Performing the tests using the default internal editor and also /usr/bin/kate.

Performing the tests using a system with a Qt version older than 5.11 (like Kubuntu 18.04 LTS) and a system with a Qt version equal or newer than 5.11 (like Kubuntu 19.10) because of a #if QT_VERSION >= QT_VERSION_CHECK(5, 11, 0).

Editing the existing files, but using F4 instead of Shift+F4.