Merge remote-tracking branch 'upstream/master' into fix_repeatcmdline

1 files changed, 75 insertions, 0 deletions

diff --git a/runtime/lua/vim/ui/clipboard/osc52.lua b/runtime/lua/vim/ui/clipboard/osc52.lua
new file mode 100644
index 0000000000..6483f0387d
--- /dev/null
+++ b/runtime/lua/vim/ui/clipboard/osc52.lua
@@ -0,0 +1,75 @@
+local M = {}
+
+--- Return the OSC 52 escape sequence
+---
+--- @param clipboard string The clipboard to read from or write to
+--- @param contents string The Base64 encoded contents to write to the clipboard, or '?' to read
+---                        from the clipboard
+local function osc52(clipboard, contents)
+  return string.format('\027]52;%s;%s\027\\', clipboard, contents)
+end
+
+function M.copy(reg)
+  local clipboard = reg == '+' and 'c' or 'p'
+  return function(lines)
+    local s = table.concat(lines, '\n')
+    io.stdout:write(osc52(clipboard, vim.base64.encode(s)))
+  end
+end
+
+function M.paste(reg)
+  local clipboard = reg == '+' and 'c' or 'p'
+  return function()
+    local contents = nil
+    local id = vim.api.nvim_create_autocmd('TermResponse', {
+      callback = function(args)
+        local resp = args.data ---@type string
+        local encoded = resp:match('\027%]52;%w?;([A-Za-z0-9+/=]*)')
+        if encoded then
+          contents = vim.base64.decode(encoded)
+          return true
+        end
+      end,
+    })
+
+    io.stdout:write(osc52(clipboard, '?'))
+
+    local ok, res
+
+    -- Wait 1s first for terminals that respond quickly
+    ok, res = vim.wait(1000, function()
+      return contents ~= nil
+    end)
+
+    if res == -1 then
+      -- If no response was received after 1s, print a message and keep waiting
+      vim.api.nvim_echo(
+        { { 'Waiting for OSC 52 response from the terminal. Press Ctrl-C to interrupt...' } },
+        false,
+        {}
+      )
+      ok, res = vim.wait(9000, function()
+        return contents ~= nil
+      end)
+    end
+
+    if not ok then
+      vim.api.nvim_del_autocmd(id)
+      if res == -1 then
+        vim.notify(
+          'Timed out waiting for a clipboard response from the terminal',
+          vim.log.levels.WARN
+        )
+      elseif res == -2 then
+        -- Clear message area
+        vim.api.nvim_echo({ { '' } }, false, {})
+      end
+      return 0
+    end
+
+    -- If we get here, contents should be non-nil
+    return vim.split(assert(contents), '\n')
+  end
+end
+
+return M