e045ee3b4e
The previous mechanism used histget() to get the last command or expression to detect if the user issued a `:wq` or similar. This had the issue where if a user issued a `:wq`, started vim again, then entered oil and saved via some mechanism that is _not_ a command (e.g. a keymap), we would incorrectly detect that `:wq` and exit after saving. The new mechanism tracks all keypresses and may end up with false negatives (e.g. ":wqaff<backspace><backspace>ll"), but those are less frustrating than false positives.
37 lines
734 B
Lua
37 lines
734 B
Lua
---@class oil.Ringbuf
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---@field private size integer
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---@field private tail integer
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---@field private buf string[]
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local Ringbuf = {}
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function Ringbuf.new(size)
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local self = setmetatable({
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size = size,
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buf = {},
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tail = 0,
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}, { __index = Ringbuf })
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return self
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end
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---@param val string
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function Ringbuf:push(val)
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self.tail = self.tail + 1
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if self.tail > self.size then
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self.tail = 1
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end
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self.buf[self.tail] = val
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end
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---@return string
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function Ringbuf:as_str()
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local postfix = ""
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for i = 1, self.tail, 1 do
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postfix = postfix .. self.buf[i]
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end
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local prefix = ""
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for i = self.tail + 1, #self.buf, 1 do
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prefix = prefix .. self.buf[i]
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end
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return prefix .. postfix
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end
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return Ringbuf
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