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Stefan Monnier authored
(window_scroll_preserve_hpos, window_scroll_preserve_vpos): New vars. (window_scroll_pixel_based, window_scroll_line_based): Use them to preserve column positions. (syms_of_window): Initialize them. * indent.c (Fvertical_motion): Extend first arg to allow passing an (HPOS . VPOS) pair. * xdisp.c (move_it_in_display_line_to): Improve the type of its args. (move_it_in_display_line): New wrapper. * dispextern.h (move_it_in_display_line): Declare.
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