Perhaps I need to switch to the next more sophisticated data structure for Lines: a gap buffer around the line the cursor is on.
I'm not sure why it would help here, though.
34TC5SYKYVUCVIQM3GNVYURQAMIXX64IOSJ4TYBPSRDS65QLTHWAC
IDGP4BJZTKAD6ZO4RLAWYVN6IFCMIM76G6HJGPTE27K4D6CDBUHQC
242L3OQXTU2TCAINRJXQEEDSXQXM7Y7USUPBK37ZNM3A7V5TUDSAC
FS2ITYYHBLFT66YUC3ENPFYI2HOYHOVEPQIN7NQR6KF5MEK4NKZAC
* Large files may grow sluggish in other ways. I've noticed in 100KB files that closing the window can take a few seconds. And it seems to take longer in proportion to how far down my edits are. The phenomenon persists even if I take out undo history.
* Large files may grow sluggish in other ways. I've noticed in 100KB files
that closing the window can take a few seconds. And it seems to take longer
in proportion to how far down my edits are. The phenomenon persists even if
I take out undo history.