add option for using alt-modifer in command windows readline (bug #59478) * gui-preferences-sc.h: key and default value for new pref for disabling menu accelerators when command window has focus * main-window.cc (main_window): initial new boolean class variable storing the pref for disabling the menu accelerators; (focus_changed): check for editor and command window getting or losing focus and en-/disable menu accelerators accordingly; (notice_settings): get new preference, disable menu accelerators if desired and if command window has focus (construct): remove connection of editor focus changed signal with the slot in main window since the related slot is now directly called from focus_changed if required * main-window.h: new class variable m_prevent_readline_conflicts_menu * settings-dialog.cc (settings_dialog) read new pref and initialize the related check box; (write_changed_settings): store state of the check box in pref file * settings-dialog.ui: added check box for new preference

root = true

[*]
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[*.{am,mk}]
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