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https://github.com/neovim/neovim.git
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c4857b695f
Problem:
Since 2f06413dfb #13042, "ESC+c" sequence is treated as "ESC c"
instead of "M-c" (ALT/META+c) when not mapped, aka "fallthrough"
behavior. But "isolated" (non-ALT/META) mappings to ESC and c were not
resolved. This behavior is especially confusing for the TUI.
Solution:
Resolve isolated ESC, c mappings when there is no M-c mapping.
Change ins_char_typebuf() to escape CSI, K_SPECIAL.
fixes #13086
fixes #15869
65 lines
2.0 KiB
Lua
65 lines
2.0 KiB
Lua
local helpers = require('test.functional.helpers')(after_each)
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local clear, feed, insert = helpers.clear, helpers.feed, helpers.insert
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local command = helpers.command
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local expect = helpers.expect
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local funcs = helpers.funcs
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local eq = helpers.eq
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describe('meta-keys #8226 #13042', function()
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before_each(function()
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clear()
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end)
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it('ALT/META, normal-mode', function()
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-- Unmapped ALT-chord behaves as ESC+c.
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insert('hello')
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feed('0<A-x><M-x>')
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expect('llo')
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-- Unmapped ALT-chord resolves isolated (non-ALT) ESC mapping. #13086 #15869
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command('nnoremap <ESC> A<lt>ESC><Esc>')
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command('nnoremap ; A;<Esc>')
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feed('<A-;><M-;>')
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expect('llo<ESC>;<ESC>;')
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-- Mapped ALT-chord behaves as mapped.
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command('nnoremap <M-l> Ameta-l<Esc>')
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command('nnoremap <A-j> Aalt-j<Esc>')
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feed('<A-j><M-l>')
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expect('llo<ESC>;<ESC>;alt-jmeta-l')
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end)
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it('ALT/META, visual-mode', function()
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-- Unmapped ALT-chords behave as ESC+c
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insert('peaches')
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feed('viw<A-x>viw<M-x>')
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expect('peach')
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-- Unmapped ALT-chord resolves isolated (non-ALT) ESC mapping. #13086 #15869
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command('vnoremap <ESC> A<lt>ESC>')
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feed('viw<A-;><ESC>viw<M-;><ESC>')
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expect('peach<ESC>;<ESC>;')
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-- Mapped ALT-chord behaves as mapped.
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command('vnoremap <M-l> Ameta-l<Esc>')
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command('vnoremap <A-j> Aalt-j<Esc>')
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feed('viw<A-j>viw<M-l>')
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expect('peach<ESC>;<ESC>;alt-jmeta-l')
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end)
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it('ALT/META insert-mode', function()
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-- Mapped ALT-chord behaves as mapped.
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command('inoremap <M-l> meta-l')
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command('inoremap <A-j> alt-j')
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feed('i<M-l> xxx <A-j><M-h>a<A-h>')
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expect('meta-l xxx alt-j')
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eq({ 0, 1, 14, 0, }, funcs.getpos('.'))
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-- Unmapped ALT-chord behaves as ESC+c.
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command('iunmap <M-l>')
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feed('0i<M-l>')
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eq({ 0, 1, 2, 0, }, funcs.getpos('.'))
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-- Unmapped ALT-chord has same `undo` characteristics as ESC+<key>
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command('0,$d')
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feed('ahello<M-.>')
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expect('hellohello')
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feed('u')
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expect('hello')
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end)
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end)
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