Apple - Shift–Command–Left/Right Arrow started switching tabs in macOS Mojave Finder, clashes with text movement?
If you set your own shortcut for moving between tabs of a window, the Shift-Command-Arrow combinations will work as before.
To set your own shortcut:
- Open System Preferences -> Keyboard -> Shortcuts
- Select App Shortcuts at the bottom.
- Click the + button to add a shortcut.
- Make sure that "All Applications" is selected
- Type in the exact names of the commands, on an English system they would be 'Show Previous Tab' and 'Show Next Tab'. Check this in the Window Menu in Finder if you're not sure.
- Add your preferred shortcut to switch between tabs in either direction
The vast majority of textboxes on macOS (including those in third-party apps) support Emacs keybindings for moving around text. These use the Ctrl key instead of Command and are thus less likely to be remapped randomly by OS changes.
In your specific case, you can use Ctrl+Shift+A and Ctrl+Shift+E to select text from the cursor to the start or end of the line respectively. These shortcuts can be entered entirely with your left hand, which might even speed you up a little.
Other useful shortcuts: Ctrl+A and Ctrl+E move the cursor to the start or end of the line respectively, while Ctrl+K deletes the text from the cursor to the end of the line. Full lists of shortcuts are posted in various spots on the web; you can check this site for example.
Also, if you're finding yourself renaming files often in Finder, consider using the multi-file renaming tool built into the Finder. Simply select multiple files, right-click (or ctrl-click/two-finger click) on them and select "Rename N Items...". This pops up a dialog box that lets you do some simple rename transformations (adding text, replacing text, or formatting names sequentially).