* Current column in non-selected (inactive) window.
@ 2018-09-18 1:24 Keith David Bershatsky
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From: Keith David Bershatsky @ 2018-09-18 1:24 UTC (permalink / raw
To: Emacs Devel
I am working on feature requests #17684 (crosshairs) and #22873 (multiple fake cursors). [Crosshairs changes colors depending upon whether the current column is odd/even numbered, or beyond the fill-column.]
I was unable to find a built-in way to obtain the current column of point in the non-selected (inactive) window. I believe the problem is that current_column and its underling functions use PT and PT_BYTE, which is not the same as the window_point in the non-selected (inactive) window.
I resolved the issue by creating a new function (nearly identical to current_column and its underlying functions) that now take an argument for a particular point of interest, and I am using Fwindow_point to get that interesting point. I replaced all PT with my particular point of interest, and in a couple of places, I replaced PT_BYTE with CHAR_TO_BYTE (point_of_interest).
Other than creating those new functions as described above, is there a built-in mechanism to get the current column in a non-selected (inactive) window?
If nothing exists, perhaps this new feature might be useful to other users in the future?
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2018-09-18 1:24 Current column in non-selected (inactive) window Keith David Bershatsky
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