make window/buffer/local scope of make_error_patterns work

[QiBaobin]

make the option useful in other scopes, for example:

hook global BufSetOption filetype=zig %{
    set-option buffer makecmd 'zig'
    set-option buffer make_error_pattern "^(?:\w:)?([^:\n]+):(\d+):(?:(\d+):)? (?:fatal )?error:([^\n]+)?"
    set-option buffer formatcmd 'zig fmt --stdin'
    set-option buffer lintcmd 'zig fmt --check'
}

  evaluate-commands -try-client %opt{toolsclient} %{
      set local makecmd "%val{client_env_SHELL}"
      set local make_error_pattern  %{(?:e: )?(?:file://)?([^\n:]+)(?::(\d+))?(?::(\d+))?}
      make -c "%arg{@}"
      rename-buffer "%arg{@}"
  }