Re: [NTG-context] problem with math: "\left" leads to "udefined symbol"

24 Jan 2017


      On 1/24/2017 2:33 PM, j. van den hoff wrote:
...
On Tue, 24 Jan 2017 14:15:08 +0100, Hans Hagen  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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