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

["j. van den hoff" <veedeehjay@gmail.com>]

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.

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

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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