fix(man): avoid setting v:errmsg (neovim#30052)

runtime/lua/man.lua

@@ -479,7 +479,13 @@ local function put_page(page)
  -- XXX: nroff justifies text by filling it with whitespace. That interacts
  -- badly with our use of $MANWIDTH=999. Hack around this by using a fixed
  -- size for those whitespace regions.
- vim.cmd([[silent! keeppatterns keepjumps %s/\s\{199,}/\=repeat(' ', 10)/g]])
+ -- Use try/catch to avoid setting v:errmsg.
+ vim.cmd([[
+ try
+ keeppatterns keepjumps %s/\s\{199,}/\=repeat(' ', 10)/g
+ catch
+ endtry
+ ]])
  vim.cmd('1') -- Move cursor to first line
  highlight_man_page()
  set_options()

test/functional/plugin/man_spec.lua

@@ -20,7 +20,7 @@ local function get_search_history(name)
  local args = vim.split(name, ' ')
  local code = [[
  local args = ...
- local man = require('runtime.lua.man')
+ local man = require('man')
  local res = {}
  man.find_path = function(sect, name)
  table.insert(res, {sect, name})