Hi All,
I'm trying to create a command that will apply a consistent style to a
word or phrase. For example, when documenting source code, I'd like to
be able to mark variables with \Var{var_name}. Then if I want the
variable names to be in mono, I can \def\Var#1{\type{#1}}. No problem
there. If I want variable names to be in quotes, then
\def\Var#1{\quote{#1}}.
The problem is that in my ConTeXt code I'd write "This is
\Var{var_name}, a variable." Which would get typeset as "This is
'var_name', a variable." where punctuation convention (at least in
American English) would have the comma inside the quote like this: "This
is 'var_name,' a variable."
I've tried four different ways of implementing this, but none of them
work consistently. Here's my last attempt:
==========================
\startluacode
function move_end_punctuation (text, punc, cmd_start, cmd_mid, cmd_end)
context(cmd_start .. text .. cmd_mid)
if string.find('.,!?', punc, 1, true) then
context(punc .. cmd_end)
else
context(cmd_end .. ' ' .. punc)
end
end
\stopluacode
\def\Var#1#2{\ctxlua{move_end_punctuation([==[#1]==],[==[#2]==],
'\\quote{\\type{','}','}')}}
\starttext
This is \Var{var_name}, a variable.
\stoptext
==========================
This works, until the \Var{} macro appears in the argument of another
macro. For example, make the text:
\framed{This is \Var{var_name}, a variable.}
and the following error results:
==========================
systems : begin file test.tex at line 16
! Missing $ inserted.
<inserted text>
$
<to be read again>
_
l.1 ...spaces quote{unskip ignorespaces type{var_
name}
\Var ...=],[==[#2]==], '\\quote{\\type{','}','}')}
l.18 \framed{This is \Var{var_name},
a variable.}
?
==========================
I think my problem has to do with parameter expansion, but I don't
understand the intricacies enough to solve this. I flailed away,
unsuccessfully, with various combinations of \unexpanded,
\normalunexpanded, luaescapestring, etc.
Does anyone have a solution or a pointer in the right direction?
Thank you,
Tad
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