a poor man's snippet expanding tool

impl/features/limits

• uses regex to match placeholder, which makes it eror-prone
  • thus it does not honor the jump order specified in the placeholder, $1 vs $2
• the processing on nvim_buf_attach(on_lines) has not been well tested, which makes the state transition fragile
  • that's why i exposed parrot.cancel()
  • and every buffer can only have one running expanding operation
• uses a subset syntax of ultisnips's: $0, ${0}, ${0:zero}
• no placeholder evaluation
  • no sh, python interpolation
• limited support expanding external snippets, eg: lsp snippet completion, docgen

prerequisites

• nvim 0.9.*
• haolian9/infra.nvim

status

• just works (tm)
• it's far from stable

usage

TBD

todo

• possibly making use of inline extmarks for placeholder evaluation and navigation
• isolating every expanding

notes

i had always been using ultisnips, while when i started to adopt lua in my nvim rice, i wanted to replace it to get rid of the depency of python, even python is my favorite language all the time. but i could not found one meets my need, also i want to see how hard is it to implement an usable one for myself (and now i knew that's not easy as there are too many states need to maintain). so i rolled my own one in the way i knew, it lacks many features, and isnt comparable to ultisnips nor others from nvim realm, yet i still enjoy using and polishing it.