left bracket in string.format()

left bracket in string.format()

[Peter Rolf]

Hi,

Not sure if this is a bug or intended behaviour. I want to fill a TABLE
row with "[<number>]", but the leading left bracket causes some problems
here. I tried the syntax 'print(string.format("[%d]",10)' in pure lua
and the result is as desired.

%% --------------
\starttext

\startluacode
context.bTABLE{}
context.bTR()
    for i = 1,8 do
    context.bTH() context(string.format("[%d]",i)) context.eTH()
    end
context.eTR()
context.eTABLE()
\stopluacode

\stoptext
%% --------------

gives

[..]
fonts           > 'fallback modern rm 12pt' is loaded
setup           > error in line 6, namespace '354>', key '1'
setup           > error in line 9, namespace '354>', key '2'
setup           > error in line 12, namespace '354>', key '3'
setup           > error in line 15, namespace '354>', key '4'
setup           > error in line 18, namespace '354>', key '5'
setup           > error in line 21, namespace '354>', key '6'
setup           > error in line 24, namespace '354>', key '7'
setup           > error in line 27, namespace '354>', key '8'
[..]

and empty TABLE cells. Any help welcome.


Peter
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___________________________________________________________________________________

Re: left bracket in string.format()

[Wolfgang Schuster]

Am 26.08.2013 um 17:01 schrieb Peter Rolf <indiego@gmx.net>:

> Hi,
> 
> Not sure if this is a bug or intended behaviour. I want to fill a TABLE
> row with "[<number>]", but the leading left bracket causes some problems
> here. I tried the syntax 'print(string.format("[%d]",10)' in pure lua
> and the result is as desired.
> 
> %% --------------
> \starttext
> 
> \startluacode
> context.bTABLE{}
> context.bTR()
>    for i = 1,8 do
>    context.bTH() context(string.format("[%d]",i)) context.eTH()
>    end
> context.eTR()
> context.eTABLE()
> \stopluacode
> 
> \stoptext
> %% --------------
> 
> gives
> 
> [..]
> fonts           > 'fallback modern rm 12pt' is loaded
> setup           > error in line 6, namespace '354>', key '1'
> setup           > error in line 9, namespace '354>', key '2'
> setup           > error in line 12, namespace '354>', key '3'
> setup           > error in line 15, namespace '354>', key '4'
> setup           > error in line 18, namespace '354>', key '5'
> setup           > error in line 21, namespace '354>', key '6'
> setup           > error in line 24, namespace '354>', key '7'
> setup           > error in line 27, namespace '354>', key '8'
> [..]
> 
> and empty TABLE cells. Any help welcome.

The \bTH command has a optional argument and when you print [<number>]
context take this as argument for \bTH. There are different ways to fix this,
one is to pass a empty argument to \bTH, e.g. "context.bTH{}" or you add \relax
after the command, e.g. "context.bTH() context.relax()".

BTW: You don’t need string.format because “context("[%d]",i)" is valid input.

Wolfgang

___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: left bracket in string.format()

[Peter Rolf]

Am 26.08.2013 17:40, schrieb Wolfgang Schuster:
> 
> Am 26.08.2013 um 17:01 schrieb Peter Rolf <indiego@gmx.net>:
> 
>> Hi,
>>
>> Not sure if this is a bug or intended behaviour. I want to fill a TABLE
>> row with "[<number>]", but the leading left bracket causes some problems
>> here. I tried the syntax 'print(string.format("[%d]",10)' in pure lua
>> and the result is as desired.
>>
>> %% --------------
>> \starttext
>>
>> \startluacode
>> context.bTABLE{}
>> context.bTR()
>>    for i = 1,8 do
>>    context.bTH() context(string.format("[%d]",i)) context.eTH()
>>    end
>> context.eTR()
>> context.eTABLE()
>> \stopluacode
>>
>> \stoptext
>> %% --------------
>>
>> gives
>>
>> [..]
>> fonts           > 'fallback modern rm 12pt' is loaded
>> setup           > error in line 6, namespace '354>', key '1'
>> setup           > error in line 9, namespace '354>', key '2'
>> setup           > error in line 12, namespace '354>', key '3'
>> setup           > error in line 15, namespace '354>', key '4'
>> setup           > error in line 18, namespace '354>', key '5'
>> setup           > error in line 21, namespace '354>', key '6'
>> setup           > error in line 24, namespace '354>', key '7'
>> setup           > error in line 27, namespace '354>', key '8'
>> [..]
>>
>> and empty TABLE cells. Any help welcome.
> 
> The \bTH command has a optional argument and when you print [<number>]
> context take this as argument for \bTH. There are different ways to fix this,
> one is to pass a empty argument to \bTH, e.g. "context.bTH{}" or you add \relax
> after the command, e.g. "context.bTH() context.relax()".
> 
> BTW: You don’t need string.format because “context("[%d]",i)" is valid input.
>

Thanks Wolfgang for the detailed answer! :-)


> Wolfgang
> 
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
> 

___________________________________________________________________________________
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
___________________________________________________________________________________