diff options
Diffstat (limited to 'Master/texmf-dist/source/latex/l3kernel/l3expan.dtx')
| -rw-r--r-- | Master/texmf-dist/source/latex/l3kernel/l3expan.dtx | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx index d912433ee8d..739acab95e5 100644 --- a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx +++ b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx @@ -35,7 +35,7 @@ % %<*driver|package> \RequirePackage{l3bootstrap} -\GetIdInfo$Id: l3expan.dtx 4149 2012-08-28 10:50:40Z bruno $ +\GetIdInfo$Id: l3expan.dtx 4458 2013-02-03 15:49:37Z bruno $ {L3 Argument expansion} %</driver|package> %<*driver> @@ -78,6 +78,7 @@ % variants. % % \section{Defining new variants} +% \label{sec:defining-variants} % % The definition of variant forms for base functions may be necessary % when writing new functions or when applying a kernel function in a @@ -193,22 +194,22 @@ % specific expansion steps are needed, such as when using delimited % arguments, should the lower-level functions with |o| specifiers be employed. % -% The |f| type is so special that it deserves an example. -% Let's pretend we want to set |\aaa| equal to the control sequence -% stemming from turning |b \l_tmpa_tl b| into a control -% sequence. Furthermore we want to store the execution of it in a +% The |f| type is so special that it deserves an example. Let's pretend +% we want to set the control sequence whose name is given by +% |b \l_tmpa_tl b| equal to the list of tokens |\aaa a|. Furthermore we +% want to store the execution of it in a % \meta{tl~var}. In this example we assume |\l_tmpa_tl| contains % the text string |lur|. The straightforward approach is % \begin{quote} -% |\tl_set:No \l_tmpb_tl { \cs_set_eq:Nc \aaa { b \l_tmpa_tl b } }| +% |\tl_set:No \l_tmpb_tl { \tl_set:cn { b \l_tmpa_tl b } { \aaa a } }| % \end{quote} % Unfortunately this only puts -% |\exp_args:NNc \cs_set_eq:NN \aaa {b \l_tmpa_tl b}| into |\l_tmpb_tl| -% and not |\cs_set_eq:NN \aaa = \blurb| as we probably wanted. Using -% \cs{tl_set:Nx} is not an option as that will die horribly. Instead -% we can do a +% |\exp_args:Nc \tl_set:Nn {b \l_tmpa_tl b} { \aaa a }| into +% |\l_tmpb_tl| and not |\tl_set:Nn \blurb { \aaa a }| as we probably +% wanted. Using \cs{tl_set:Nx} is not an option as that will die +% horribly. Instead we can do a % \begin{quote} -% |\tl_set:Nf \l_tmpb_tl { \cs_set_eq:Nc \aaa { b \l_tmpa_tl b } }| +% |\tl_set:Nf \l_tmpb_tl { \tl_set:cn { b \l_tmpa_tl b } { \aaa a } }| % \end{quote} % which puts the desired result in |\l_tmpb_tl|. It requires % \cs{tl_set:Nf} to be defined as |