Re: problem with math: "\left" leads to "udefined symbol"

[Hans Hagen <pragma@wxs.nl>]

On 1/24/2017 2:33 PM, j. van den hoff wrote:
> On Tue, 24 Jan 2017 14:15:08 +0100, Hans Hagen <pragma@wxs.nl> wrote:
>
> thanks for the quick reply and sorry for my not being precise.
> correction/addition follows:
>
>> On 1/24/2017 11:33 AM, j. van den hoff wrote:
>>> hi everybody,
>>>
>>> after a 2 year hiatus I'm just giving `context' a second try (so, really
>>> not much experience so far).
>>>
>>> I updated to the latest version (0.63) before proceeding.
>>
>> 0.63 what? luatex? then you need to check things as we're beyond 1.00 now
>
> I was refering to the `context --version' output:
>
> resolvers       | trees | analyzing 'home:texmf'
> mtx-context     | ConTeXt Process Management 0.63
> mtx-context     |
> mtx-context     | main context file:
> path_to/context/tex/texmf-context/tex/context/base/mkiv/context.mkiv
> mtx-context     | current version: 2017.01.17 17:37
>
> I _was_ under the impression that this is current since I did an update
> and `current version' gives a date from last week. or that's what I
> believed would happen, when re-running `first-setup.sh': am I mistaken?
> if this is a stupid question I'd accept a RTFM answer ;-).

the context version is: 2017.01.17 17:37

(best also mention the reported luatex version in such cases)

the 0.63 hardly changes as mtx-context hardly changes


>>
>>> two observations:
>>>
>>> 1.
>>> in a new document including assorted equations everything went fine
>>> until I tried something like
>>>
>>> \startformula
>>> x = \left 1 + 2 \right
>>> \stopformula
>>
>> \left( ... \right)
>>
>> left and right take an argument that has to be some known open or
>> close operator
>
> yes, I know. sorry for the glitch. I _meant_
>
> \startformula
>   x =  \left ( 1 + 2 \right )
>  \stopformula
>
> and _that_ is what's still causes the `Undefined control sequence'
> (both, in the new as well as the two year old unmodified document) --
> actually it is thus reported in
> the error message (in the previous mail, too):
>
> "l.472 x = \left (
>                 1 + 2 \right )"
>

this just works here ... so can others confirm it?

\starttext

\startformula
     x =  \left ( 1 + 2 \right )
\stopformula

\stoptext


>>> which caused an error:
>>>
>>> 8<------------------------------------------------------------------
>>>  ! Undefined control sequence
>>>
>>>
>>> \strc_synonyms_insert_meaning ...urrentsynonymtag
>>>                                                   {#2}\fastsetup
>>> {\??simplel...
>>> \math_left ...ame \??mathleft \meaning \nexttoken
>>>                                                   \endcsname
>>> \expandafter \l...
>>> l.472 x = \left (
>>>                 1 + 2 \right )
>>> 8<------------------------------------------------------------------
>>>
>>> 2.
>>> an old document (not modified these 2 years) does no longer compile due
>>> to apparently the same problem (not understanding `\left', `\right'.
>>>
>>> question: my understanding is, that `context' supports "everything" out
>>> of the box (notably equations) and there is no need for explicit loading
>>> of additional packages? so `\left' etc. _should be defined (and it
>>> _used_ to work 2 years ago)? what am I missing?
>>>
>>> thx, joerg
>>>
>>
>>
>
>


-- 

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                                           Hans Hagen | PRAGMA ADE
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