Subject: Re: bug#16306: 24.3.50; font change creates blank column on Lucid

From: martin rudalics <[email-masked]>
Date: Tue, 31 Dec 2013 19:58:41 +0100

> The native scroll bar is the same width as a character.  Not sure if the pixelwise resize changed that.

Can you tell me how this is processed in this part of x_new_font of
Emacs 24.3?  I'm too silly to understand its semantics.

   /* Compute the scroll bar width in character columns.  */
   if (FRAME_CONFIG_SCROLL_BAR_WIDTH (f) > 0)
     {
       int wid = FRAME_COLUMN_WIDTH (f);
       FRAME_CONFIG_SCROLL_BAR_COLS (f)
	= (FRAME_CONFIG_SCROLL_BAR_WIDTH (f) + wid-1) / wid;
     }
   else
     {
       int wid = FRAME_COLUMN_WIDTH (f);
       FRAME_CONFIG_SCROLL_BAR_COLS (f) = (14 + wid - 1) / wid;
     }

martin