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From: Joseph Wright <joseph.wright@MORNINGSTAR2.CO.UK>
Subject: l3quark/l3tlp
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Hello all,

The latest SVN update is broken, I'm afraid.  The issue is l3tlp and
l3quark.  I'd already pointed out that l3tlp has an issue:

\let_new:NN \tlist_map_break:w \use_none_delimit_by_q_recursion_stop:w

and didn't load l3quark, so \tlist_map_break:w did not work (it was
undefined).  Will has now added l3quark to the load list for l3tlp,
*but* l3quark already requires l3expan, which itself requires l3tlp.
Hence you now get:

("<localtexmf>\l3quark.sty"
! Undefined control sequence.
\quark_new:N #1->\tlp_new:Nn
                             #1{#1}
l.57 \quark_new:N \q_stop

I'd humbly suggest the following diff:

--- C:\Temp\l3tlp.dtx-revBASE.svn000.tmp.dtx	Sun Nov 23 11:32:04 2008
+++ C:\Documents and
Settings\joseph\texmf\tex\latex\expl3\l3in2e\l3tlp.dtx	Sun Nov 23
11:31:19 2008
@@ -744,7 +744,6 @@
 %<package>  {\filename}{\filedate}{\fileversion}{\filedescription}
 %<package&!check>\RequirePackage{l3basics}
 %<package&check>\RequirePackage{l3chk}
-%<package>\RequirePackage{l3quark}
 %    \end{macrocode}
 %    \begin{macrocode}
 %<*initex|package>
@@ -1678,7 +1677,7 @@
 %  \begin{macro}{\tlp_map_break:w}
 %  The break statement.
 %    \begin{macrocode}
-\let_new:NN \tlist_map_break:w \use_none_delimit_by_q_recursion_stop:w
+\def_long_new:Npn \tlist_map_break:w #1\q_recursion_stop {}
 \let_new:NN \tlp_map_break:w \tlist_map_break:w
 %    \end{macrocode}
 %  \end{macro}

which seems to work, with the only cost being that \tlist_map_break:w
and \use_none_delimit_by_q_recursion_stop:w are both defined independently.
-- 
Joseph Wright