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feat(ui): emit "msg_clear" event after clearing the screen (#34035)

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Problem:  ext_messages cannot tell when the screen was cleared, which is
          needed to clear visible messages. An empty message is also
          never emitted, but clears messages from the message grid.
Solution: Repurpose the "msg_clear" event to be emitted when the screen
          was cleared. Emit an empty message with the `empty` kind to
          hint to a UI to clear the cmdline area.
This commit is contained in:
luukvbaal
2025-06-27 00:27:21 +02:00
committed by GitHub
parent 6005bc68b2
commit 2b4c1127ad
11 changed files with 227 additions and 139 deletions
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15
runtime/lua/vim/_extui/cmdline.lua
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@@ -56,9 +56,14 @@ end
---@param level integer
---@param hl_id integer
function M.cmdline_show(content, pos, firstc, prompt, indent, level, hl_id)
M.level, M.indent, M.prompt = level, indent, #prompt > 0
M.level, M.indent, M.prompt = level, indent, M.prompt or #prompt > 0
-- Only enable TS highlighter for Ex commands (not search or filter commands).
M.highlighter.active[ext.bufs.cmd] = firstc == ':' and M.highlighter or nil
if ext.msg.cmd.msg_row ~= -1 then
ext.msg.msg_clear()
end
ext.msg.virt.last = { {}, {}, {}, {} }
set_text(content, ('%s%s%s'):format(firstc, prompt, (' '):rep(indent)))
if promptlen > 0 and hl_id > 0 then
api.nvim_buf_set_extmark(ext.bufs.cmd, ext.ns, 0, 0, { hl_group = hl_id, end_col = promptlen })
@@ -67,14 +72,6 @@ function M.cmdline_show(content, pos, firstc, prompt, indent, level, hl_id)
local height = math.max(ext.cmdheight, api.nvim_win_text_height(ext.wins.cmd, {}).all)
win_config(ext.wins.cmd, false, height)
M.cmdline_pos(pos)
-- Clear message cmdline state; should not be shown during, and reset after cmdline.
if ext.cfg.msg.target == 'cmd' and ext.msg.cmd.msg_row ~= -1 then
ext.msg.prev_msg, ext.msg.dupe, ext.msg.cmd.msg_row = '', 0, -1
api.nvim_buf_clear_namespace(ext.bufs.cmd, ext.ns, 0, -1)
ext.msg.virt.msg = { {}, {} }
end
ext.msg.virt.last = { {}, {}, {}, {} }
end
--- Insert special character at cursor position.