stabilizing the output of --constantshow

[Benno Schulenberg]

Op 10-03-2021 om 17:10 schreef Mike Frysinger:
> i kind of wish it wasn't so jumpy, but i've gotten used to it.  maybe:
> 
> [ line %*i/%i (%2i%%),
> * the current line width should be the same as the max line width
> * the percentage should float between 2 & 3 cols rather than 1 & 2 & 3
> 
> col %*i/%i (%3i%%),
> * the current col width should be the same as the max col width
> * it should always be at least 2

Indeed, always at least 2, because otherwise when passing over a blank
line it goes from "col 12/34" to "col 1/1" and the left and right still
jump one character inward.

> * the percentage should stay fixed at 3 cols since the cursor is frequently
>   at the end col in the current line as one types
> 
> char %*i,%i (%2i%%) ]
> * the current count width should be the same as the max count width
> * the percentage should float between 2 & 3 cols rather than 1 & 2 & 3

See attached patch for a first try.  For the vast majority of files,
lines should be less than 100 columns wide, so I've simply used
"col %2zu/%2zu".  When coming across wider lines, --constantshow
will still be jumpy, but... that could be a gentle encouragement
not to use such wide lines.  :)

Other users of 'set constantshow', please try this patch and comment.

Benno

more-stabilized.patch
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