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Chong Yidong authored
* lisp/bindings.el: Remove explicit help-echo from format-mode-line. (mode-line-front-space, mode-line-end-spaces) (mode-line-misc-info): New variables. (mode-line-modes, mode-line-position): Move the default value to the variable definition. (mode-line-default-help-echo): New defcustom. * src/buffer.c (buffer_local_value_1): New function, split from Fbuffer_local_value; can return Qunbound. (Fbuffer_local_value): Use it. (Vmode_line_format): Docstring tweaks. * src/xdisp.c (calc_pixel_width_or_height): Use Fbuffer_local_value. (note_mode_line_or_margin_highlight): If there is no help echo, use mode-line-default-help-echo. Handle the case where the mouse position is past the end of the mode line string. * doc/lispref/modes.texi (Mode Line Data): Use "mode line construct" terminology for consistency.
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