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3a3c6f0907
Problem: The `termcap.lua` module is too narrowly named. We may need a place for tty-related functionality in the future. https://github.com/neovim/neovim/pull/31399#discussion_r1882598297 Solution: This isn't a public/documented interface, so just rename it.
117 lines
3.5 KiB
Lua
117 lines
3.5 KiB
Lua
--- @class (private) TermFeatures
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--- @field osc52 boolean?
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local id = vim.api.nvim_create_augroup('nvim.osc52', { clear = true })
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vim.api.nvim_create_autocmd('UIEnter', {
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group = id,
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desc = 'Enable OSC 52 feature flag if a supporting TUI is attached',
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callback = function()
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-- If OSC 52 is explicitly disabled by the user then don't do anything
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if vim.g.termfeatures ~= nil and vim.g.termfeatures.osc52 == false then
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return
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end
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local tty = false
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for _, ui in ipairs(vim.api.nvim_list_uis()) do
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if ui.stdout_tty then
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tty = true
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break
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end
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end
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-- Do not query when no TUI is attached
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if not tty then
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return
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end
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-- Clear existing OSC 52 value, since this is a new UI we might be attached to a different
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-- terminal
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do
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local termfeatures = vim.g.termfeatures or {} ---@type TermFeatures
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termfeatures.osc52 = nil
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vim.g.termfeatures = termfeatures
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end
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-- Check DA1 first
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vim.api.nvim_create_autocmd('TermResponse', {
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group = id,
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nested = true,
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callback = function(ev)
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local resp = ev.data.sequence ---@type string
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local params = resp:match('^\027%[%?([%d;]+)c$')
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if params then
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-- Check termfeatures again, it may have changed between the query and response.
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if vim.g.termfeatures ~= nil and vim.g.termfeatures.osc52 ~= nil then
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return true
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end
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for param in string.gmatch(params, '%d+') do
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if param == '52' then
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local termfeatures = vim.g.termfeatures or {} ---@type TermFeatures
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termfeatures.osc52 = true
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vim.g.termfeatures = termfeatures
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return true
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end
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end
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-- Do not use XTGETTCAP on terminals that echo unknown sequences
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if vim.env.TERM_PROGRAM == 'Apple_Terminal' then
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return true
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end
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-- Fallback to XTGETTCAP
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require('vim.tty').query('Ms', function(cap, found, seq)
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if not found then
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return
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end
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-- Check termfeatures again, it may have changed between the query and response.
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if vim.g.termfeatures ~= nil and vim.g.termfeatures.osc52 ~= nil then
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return
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end
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assert(cap == 'Ms')
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-- If the terminal reports a sequence other than OSC 52 for the Ms capability
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-- then ignore it. We only support OSC 52 (for now)
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if not seq or not seq:match('^\027%]52') then
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return
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end
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local termfeatures = vim.g.termfeatures or {} ---@type TermFeatures
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termfeatures.osc52 = true
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vim.g.termfeatures = termfeatures
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end)
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return true
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end
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end,
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})
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-- Write DA1 request
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vim.api.nvim_ui_send('\027[c')
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end,
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})
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vim.api.nvim_create_autocmd('UILeave', {
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group = id,
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desc = 'Reset OSC 52 feature flag if no TUIs are attached',
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callback = function()
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-- If OSC 52 is explicitly disabled by the user then don't do anything
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if vim.g.termfeatures ~= nil and vim.g.termfeatures.osc52 == false then
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return
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end
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-- If no TUI is connected to Nvim's stdout then reset the OSC 52 term features flag
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for _, ui in ipairs(vim.api.nvim_list_uis()) do
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if ui.stdout_tty then
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return
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end
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end
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local termfeatures = vim.g.termfeatures or {} ---@type TermFeatures
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termfeatures.osc52 = nil
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vim.g.termfeatures = termfeatures
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end,
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})
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