printing the current date

printing the current date

[Peter Münster]

Hi,

I would expect, that \currentdate prints the current date, but it does
not:

--8<---------------cut here---------------start------------->8---
\starttext
\date[d=1]% first day of this month, ok

\date% again first day, last parameters are used, this is ok

\currentdate% same as \date, but I would expect the day of today...
\stoptext
--8<---------------cut here---------------end--------------->8---

How could I print the current date please?

TIA for any hints,
-- 
           Peter
___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: printing the current date

[Fabrice L]

> Le 10 janv. 2021 à 13:23, Peter Münster <pm@a16n.net> a écrit :
> 
> Hi,
> 
> I would expect, that \currentdate prints the current date, but it does
> not:
> 
> --8<---------------cut here---------------start------------->8---
> \starttext
> \date[d=1]% first day of this month, ok
> 
> \date% again first day, last parameters are used, this is ok
> 
> \currentdate% same as \date, but I would expect the day of today...
> \stoptext
> --8<---------------cut here---------------end--------------->8---
> 
> How could I print the current date please?

For exemple:

 \date[][weekday,day,month,year] and \currenttime[h,{\,:\,},m] 

F.

> 
> TIA for any hints,
> -- 
>           Peter
> ___________________________________________________________________________________
> 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://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> 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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: printing the current date

[Peter Münster]

On Sun, Jan 10 2021, Fabrice L wrote:

> For exemple:
>
>  \date[][weekday,day,month,year] and \currenttime[h,{\,:\,},m] 

Sorry, I should have mentioned, that I use the latest version:
context-2021.01.08

-- 
           Peter
___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: printing the current date

[Peter Münster]

On Sun, Jan 10 2021, Peter Münster wrote:

> \currentdate% same as \date, but I would expect the day of today...

Should I fill a bug-report on the tracker?
Perhaps also for the missing space after \date[]?

TIA,
-- 
           Peter
___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: printing the current date

[Hans Hagen]

On 1/27/2021 6:28 PM, Peter Münster wrote:
> On Sun, Jan 10 2021, Peter Münster wrote:
> 
>> \currentdate% same as \date, but I would expect the day of today...
> 
> Should I fill a bug-report on the tracker?
> Perhaps also for the missing space after \date[]?
Reporting here is faster. Can (lazy me) Wolfgang confirm the issue?

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: printing the current date

[Wolfgang Schuster]

Hans Hagen schrieb am 27.01.2021 um 22:31:
> On 1/27/2021 6:28 PM, Peter Münster wrote:
>> On Sun, Jan 10 2021, Peter Münster wrote:
>>
>>> \currentdate% same as \date, but I would expect the day of today...
>>
>> Should I fill a bug-report on the tracker?
>> Perhaps also for the missing space after \date[]?
>
> Reporting here is faster. Can (lazy me) Wolfgang confirm the issue?


1. Wrong date

The \date command has wrong/weird grouping which makes global changes 
for the day, month and year.

\permanent\tolerant\protected\def\date[#1]#*[#2]%
   {\dontleavehmode
    \ifparameter#1\or
      \begingroup
      \letdummyparameter\c!d\normalday
      \letdummyparameter\c!m\normalmonth
      \letdummyparameter\c!y\normalyear
      \getdummyparameters[#1]%
      \normalexpanded
        {\endgroup
         \normalday  \number\directdummyparameter\c!d\relax
         \normalmonth\number\directdummyparameter\c!m\relax
         \normalyear \number\directdummyparameter\c!y\relax}%
    \fi
    ...}


2. Missing space

When not all optional arguments are used the space after the last given 
argument is gobbled. This was normal behavior for a long time until you 
changed the code in MkIV to keep them.


\tolerant\def\foo[#1]#*[#2]%
   {[#1][#2]}

\starttext

a \foo [1] b

a \foo [1] [2] b

\stoptext


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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

missing space after \date[] (was: printing the current date)

[Peter Münster]

On Wed, Jan 27 2021, Wolfgang Schuster wrote:

> When not all optional arguments are used the space after the last
> given argument is gobbled. This was normal behavior for a long time
> until you changed the code in MkIV to keep them.

Hi,

What does that mean? Is that going to be changed?
How should \date[] be used now in the text?
For now, I do it like "bla \date[d=3]\ bla".
Is there a nicer way?

TIA for any hints,
-- 
           Peter
___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: missing space after \date[] (was: printing the current date)

[Hans Hagen]

On 3/13/2021 12:10 AM, Peter Münster wrote:
> On Wed, Jan 27 2021, Wolfgang Schuster wrote:
> 
>> When not all optional arguments are used the space after the last
>> given argument is gobbled. This was normal behavior for a long time
>> until you changed the code in MkIV to keep them.
> 
> Hi,
> 
> What does that mean? Is that going to be changed?
> How should \date[] be used now in the text?
> For now, I do it like "bla \date[d=3]\ bla".
> Is there a nicer way?
> 
> TIA for any hints,
The problem with an interface with optional arguments is that it has to 
look ahead. There are actually some macros that use this feature to get 
rid of upcoming spaces (picking up two optional arguments where one is 
needed). So, no matter what solution is chosen: push back a space or 
not, it has some unpredictable character.

This is why I always am explicit, as in \date[d=3]\ bla because no 
matter what happens bvehind the screens, the \ terminates the argument 
check so it will stay. (I admit that i'm mnore often bitten by the 
pushed back one than the gobbled one so i make it a habit to be explicit 
about spaces, like like i use \removeunwantedspaces when i'm not sure
when there can be spaces that crept in).

We can of course in lmtx bring back the 'push back a space' behaviour 
but we then also introduce some fuzzyness. Now we have "we scan upto n 
arguments and gobble spaces when doing so".

Btw, there is also another aspect: when looking for optional arguments 
the next token gets looked at and that one can be in an upcoming macro 
or content.

\startfoo[a][b]
    content
\stopfoo

\startfoo[a]
    [ that starts content
\stopfoo

so sometimes one needs

\startfoo[a]
    \relax [ that starts content
\stopfoo

to abort the scanning.

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________