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--[[ 50-cmdline.lua — command-line mode helpers.
Readline-style kill-line and a non-incremental history search that stays usable while the
completion menu is open.
Keymaps:
`<C-k>` kill from the cursor to the end of the command line
`<C-p>` previous history entry
`<C-n>` next history entry
]]
----------------------------------------------------------------------------------------------------
-- Local functions ---------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
-- Kill from the cursor to the end of the command line, akin to Readline's kill-line
local function kill_line()
local pos = vim.fn.getcmdpos() -- 1-based byte index of the cursor
vim.fn.setcmdline(vim.fn.getcmdline():sub(1, pos - 1), pos)
end
-- Non incremental command-line history search that works while the completion menu is active
local function history_prev()
return vim.fn.pumvisible() == 1 and "<C-e><Up>" or "<Up>"
end
local function history_next()
return vim.fn.pumvisible() == 1 and "<C-e><Down>" or "<Down>"
end
----------------------------------------------------------------------------------------------------
-- Keymaps -----------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
vim.keymap.set("c", "<C-k>", kill_line, { desc = "Kill from cursor to end of line" })
vim.keymap.set("c", "<C-p>", history_prev, { expr = true, desc = "Previous history entry" })
vim.keymap.set("c", "<C-n>", history_next, { expr = true, desc = "Next history entry" })
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