This is a sign of a great text editor community: when you see an idea elsewhere, you explore it and see if you can achieve the same advantages! https://www.reddit.com/r/emacs/comments/88b51s/putting_the_i_back_in_ide_jane_sts_emacsbased/dwkwcg9/
(Tarsius has lots of valuable opinions on VCS integration with editors, of course.)
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One interesting design choice in Emacs that I haven't seen in other editors: reserved shortcuts.
An Emacs extension shouldn't use F5 through F12, or Ctrl-c LETTER. This lets users configure their own shortcuts. https://www.gnu.org/software/emacs/manual/html_node/emacs/Key-Bindings.html
Does it exist elsewhere? I miss it in VS Code, where e.g. all the Fn keys are already assigned.
One interesting design choice in Emacs that I haven't seen in other editors: reserved shortcuts.
An Emacs extension shouldn't use F5 through F12, or Ctrl-c LETTER. This lets users configure their own shortcuts. https://www.gnu.org/software/emacs/manual/html_node/emacs/Key-Bindings.html
Does it exist elsewhere?
I've created my first standalone Rust library! line-numbers is a simple project for finding line numbers of string offsets, efficiently: https://crates.io/crates/line-numbers
It's factored out of difftastic as it's something I want to reuse elsewhere.