Re: break strings

[luigi scarso <luigi.scarso@gmail.com>]

On Mon, Jun 13, 2011 at 3:52 PM, Steffen Wolfrum <context@st.estfiles.de> wrote:

>> Where is the difference ?
>>
>> \starttext
>>
>>
>> \showframe
>>
>> \define[1]\ThisHelps {\handletokens#1\with{\hskip 0pt plus
>> .1pt\firstofoneargument}}
>>
>> Test text test text\ThisHelps
>> {9769387937933hhgiuiuziuziduzid93739837fhieuhifeuhfeiu39739837938398zfhfdkuhfiufhz398739837r98z379dihhfiu}
>>
>> \define[1]\ThisHelpsLuigi{%
>> \startluacode
>> s='#1'
>> s= string.gsub(s,'(.)',"\%1\\hskip0sp")
>> % maybe only some chars...
>> %s= string.gsub(s,'[=/]',"\%1\\hskip0sp")
>> context(s)
>> \stopluacode}
>>
>> Test text test text\ThisHelpsLuigi
>> {9769387937933hhgiuiuziuziduzid93739837fhieuhifeuhfeiu39739837938398zfhfdkuhfiufhz398739837r98z379dihhfiu}
>>
>> \stoptext
>
>
> Just my "greenness" with luacode ...
>
> I didn't expect that it could be wrapped so easily in an handy \define command:
> context(s) is wrapped in start/stopluacode is wrapped in \define[1]\LuigiHelps{...}
The key point is
 % maybe only some chars...
 %s= string.gsub(s,'[=/]',"\%1\\hskip0sp")
With '[=/]'
you define a set of chars (only '=' and '/' in this example)
so that only '=' => '=\hskip0sp'
and
'/' => '/\hskip0sp'
i.e. breaks appear only on '=' and '/'.
It' possible to define whatever char you want, but you must pay attention to '%'
'#' etc. (as you do with \catcode)

-- 
luigi
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________