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460
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1 --
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2 -- Copied from https://gist.github.com/numToStr/1ab83dd2e919de9235f9f774ef8076da
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3 --
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4 local cmd = vim.api.nvim_command
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5
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6 local function autocmd(this, event, spec)
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7 local is_table = type(spec) == 'table'
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8 local pattern = is_table and spec[1] or '*'
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9 local action = is_table and spec[2] or spec
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10 if type(action) == 'function' then
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11 action = this.set(action)
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12 end
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13 local e = type(event) == 'table' and table.concat(event, ',') or event
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489
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14 local pattern = type(pattern) == 'table' and table.concat(pattern, ',') or pattern
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460
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15 cmd('autocmd ' .. e .. ' ' .. pattern .. ' ' .. action)
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16 end
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17
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18 local S = {
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19 __au = {},
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20 }
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21
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22 local X = setmetatable({}, {
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23 __index = S,
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24 __newindex = autocmd,
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25 __call = autocmd,
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26 })
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27
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28 function S.exec(id)
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29 S.__au[id]()
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30 end
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31
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32 function S.set(fn)
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33 local id = string.format('%p', fn)
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34 S.__au[id] = fn
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35 return string.format('lua require("au").exec("%s")', id)
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36 end
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37
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38 function S.group(grp, cmds)
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39 cmd('augroup ' .. grp)
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40 cmd 'autocmd!'
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41 if type(cmds) == 'function' then
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42 cmds(X)
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43 else
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44 for _, au in ipairs(cmds) do
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45 autocmd(S, au[1], { au[2], au[3] })
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46 end
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47 end
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48 cmd 'augroup END'
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49 end
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50
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51 return X
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