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tutor: force one sign per line (#14352)

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The only thing setting signs in the tutor buffer (buftype=nofile), should be
tutor.vim itself.

Instead of endlessly piling up new signs per line, just unplace any sign on the
line before placing a new one.

Closes https://github.com/neovim/neovim/issues/13808
Closes https://github.com/neovim/neovim/pull/13809
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Marco Hinz 2021-04-13 12:13:44 +02:00 committed by GitHub
parent 4a36ec6da0
commit ef3f05c432
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runtime/autoload/tutor.vim
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@ -104,6 +104,10 @@ function! tutor#CheckLine(line)
if exists('b:tutor_metadata') && has_key(b:tutor_metadata, 'expect')
let bufn = bufnr('%')
let ctext = getline(a:line)
let signs = sign_getplaced('.', {'lnum': a:line})[0].signs
if !empty(signs)
call sign_unplace('', {'id': signs[0].id})
endif
if b:tutor_metadata['expect'][string(a:line)] == -1 || ctext ==# b:tutor_metadata['expect'][string(a:line)]
exe "sign place ".b:tutor_sign_id." line=".a:line." name=tutorok buffer=".bufn
else