The (modified) changes I submitted are now in the official source. Kovid accepted 3 of the possibilities: 'open_viewer', 'edit_metadata', and 'do_nothing', removed 'down_arrow', and added 'edit_cell'.
The tweak documentation is:
Quote:
#: Control behavior of the book list
# You can control the behavior of double clicks and pressing enter on the books list.
# Choices: open_viewer, do_nothing,
# edit_cell, edit_metadata. Selecting anything other than open_viewer has the
# side effect of disabling editing a field using a single click.
# Default: open_viewer.
# Example: doubleclick_on_library_view = 'do_nothing'
# You can also control whether the book list scrolls horizontal per column or
# per pixel. Default is per column.
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The defaults are
Quote:
doubleclick_on_library_view = 'open_viewer'
enter_key_behavior = 'open_viewer'
horizontal_scrolling_per_column = True
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