\def\enqueue#1#2{%
\global\csname q/#1\expandafter\endcsname=
- \expandafter{\the\csname q/#1\endcsname{#2}}%
+ \expandafter{\the\csname q/#1\endcsname{#2}}%
}
\def\grabhead#1#2\endstop{\def\head{#1}}
\def\gethead#1{\expandafter\grabhead\the\csname q/#1\endcsname\nil\endstop}