maintain approximate position in buffer

[league]

Thanks for this elisp support! I thought I would want the before-save functionality, but what I found disappointing was that it jumps to the beginning of the buffer each time, causing me to lose context.

I realize (after I tried it) that the fix isn't as simple as adding a save-excursion, because it replaces the whole buffer. And it isn't as simple as restoring by line number because that can change substantially. But I wonder if there's a way to maintain the approximate position based on content… is it something you've thought about?

[league]

A small follow-up: I'm finding that the behavior of auto-revert-mode for maintaining buffer position is actually pretty good, so running ormolu via async-shell-command or compile-command is reasonable.

[purcell]

This would be solved, I believe, by using my reformatter.el library to implement this one. It would reduce this library to just a few lines, and aims to correctly handle all the common details which are hard to get right when writing formatter wrappers like this.

[mrkkrp]

If this project does not progress, I'll put together something else using @purcell 's reformatter thingy. I have some ideas of my own by now for Emacs integration.

[vyp]

https://github.com/raxod502/apheleia for some more ideas about solving this issue

[purcell]

@vyp That's a lot more machinery than reformatter.el, for not much practical benefit IMO. (In writing reformatter I reviewed a lot of reformatter libraries, many of which had cargo-culted very old RCS patch code around, and decided to omit it given that the Emacs built-ins do a pretty great job these days.)

[vyorkin]

@league thank you for starting this discussion. Sorry for delay. I didn't watch this repo for some reason... I like the approach of using the reformatter.el library, #2 looks pretty good :+1: @amesgen