OK. Here we go. I found some time last night. Attached is a git patch file for changes that implement this feature request as well as (GNU) diffs for the individual files in question. It's a pretty simple commit. It's worth noting that I'm probably overlooking something in how I create the glyph, I definitely don't understand the nuances of the display code. But I hope it's helpful. On Mon, Sep 13, 2021 at 12:27 PM Eli Zaretskii wrote: > > From: Michael Gallagher - NOAA Affiliate > > Date: Mon, 13 Sep 2021 12:17:09 -0600 > > Cc: Lars Ingebrigtsen , 50506@debbugs.gnu.org > > > > Funny enough, that's *exactly* what I tried to do, but I ran into > problems getting the variable to display in > > customize-variable (a problem with what I put in cus-start.el?) and if I > manually used setq it didn't seem to > > get translated correctly by the way I coded the macro. > > I think if you look up all the pieces that handle > display-fill-column-indicator-character, both in C and in Lisp, you > will have your answers. Feel free to ask specific questions if > something is still unclear after that. > -- Michael Gallagher, PhD CIRES Research Scientist Polar Observations and Processes Team (ESRL/NOAA/PSD) 325 Broadway, Boulder, Colorado 80305