Upgrade known clipboard providers with backups and package version guard

test/shell.d/fixtures/neovim-clipboard/initial-fix.lua

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+-- Clipboard for sessions whose yanks may need to reach another machine:
+-- every copy is emitted as OSC 52 (inside tmux this becomes a tmux buffer,
+-- rebroadcast to every attached client, local or SSH). Paste prefers the
+-- local Wayland clipboard when one is available, so content copied in other
+-- apps remains pasteable; without a display, paste is an OSC 52 query that
+-- tmux (or the terminal) answers.
+local M = {}
+
+local function proc_lines(pid, file)
+  local ok, lines = pcall(vim.fn.readfile, "/proc/" .. pid .. "/" .. file)
+  return ok and lines or {}
+end
+
+local function proc_ppid(pid)
+  for _, line in ipairs(proc_lines(pid, "status")) do
+    local ppid = line:match("^PPid:%s+(%d+)")
+    if ppid then
+      return tonumber(ppid)
+    end
+  end
+end
+
+local function ancestor_process_named(name)
+  local pid = vim.fn.getpid()
+
+  for _ = 1, 16 do
+    local ppid = proc_ppid(pid)
+    if not ppid or ppid <= 1 then
+      return false
+    end
+
+    local comm = proc_lines(ppid, "comm")[1] or ""
+    if comm:find(name, 1, true) then
+      return true
+    end
+
+    pid = ppid
+  end
+
+  return false
+end
+
+function M.setup()
+  local in_tmux = vim.env.TMUX ~= nil
+  local in_ssh = vim.env.SSH_TTY ~= nil or vim.env.SSH_CONNECTION ~= nil
+  local in_herdr = vim.env.HERDR_PANE_ID ~= nil or ancestor_process_named("herdr")
+
+  if not (in_tmux or in_ssh or in_herdr) then
+    return
+  end
+
+  local osc52 = require("vim.ui.clipboard.osc52")
+  local has_wayland = vim.env.WAYLAND_DISPLAY ~= nil
+    and vim.fn.executable("wl-copy") == 1
+    and vim.fn.executable("wl-paste") == 1
+
+  local function copy(register)
+    local emit = osc52.copy(register)
+
+    return function(lines)
+      if has_wayland then
+        local cmd = { "wl-copy", "--sensitive", "--type", "text/plain" }
+        if register == "*" then
+          cmd[#cmd + 1] = "--primary"
+        end
+        vim.fn.system(cmd, lines)
+      end
+
+      if vim.g.omarchy_remote_clipboard_osc52 ~= false then
+        emit(lines)
+      end
+    end
+  end
+
+  local function paste(register)
+    if not has_wayland then
+      return osc52.paste(register)
+    end
+
+    return function()
+      local cmd = { "wl-paste", "--no-newline" }
+      if register == "*" then
+        cmd[#cmd + 1] = "--primary"
+      end
+
+      local lines = vim.fn.systemlist(cmd, "", 1)
+      return vim.v.shell_error == 0 and lines or {}
+    end
+  end
+
+  -- LazyVim disables clipboard syncing over SSH; our provider supports it.
+  vim.opt.clipboard = "unnamedplus"
+
+  vim.g.clipboard = {
+    name = "OmarchyRemoteClipboard",
+    copy = { ["+"] = copy("+"), ["*"] = copy("*") },
+    paste = { ["+"] = paste("+"), ["*"] = paste("*") },
+    cache_enabled = 0,
+  }
+end
+
+return M