DEFINITIONS USED:
\set{recurse_segment}{\recurse_segment}
\set{recurse_stack}{\eval{\recurse_stack}}
\set{overflow_user}{\push{user}\overflow_user}
\set{underflow_user}{\pop{user}\underflow_user}
\set{foo}{foo_start\@{ foo_at }foo_end}
\set{__device__}{stress}
\set{one}{1}
\set{zero}{0}
\set{abc}{abc}
\set{def}{def}
\set{ct}{0}
\env{myenv}{myenv_start}{myenv_end}
\env{myenv2}{myenv2_start}{myenv2_end}
\begin{myenv}
\begin{myenv2}
myenv_start
myenv2_start

||| undef in plain scope:
||| \nsk
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| undef in at scope:
||| \@{\nsk}
abc[
sk]def

||| undef at deeper level:
||| \eval{\textmap{{word}{ucase}{number}{roman}}{\nsk}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| undef in and scope:
||| \write{\__fnout__}{device}{\@{\&{\nsk}}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [filterAt] AND scope did not parse
abc[]def

||| recurse segment:
||| \recurse_segment
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <recurse_segment>
___ [yamSegPush] exceeding maximum segment depth <200>
abc[

||| recurse stack:
||| \recurse_stack
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <eval#1>
___ [yamStackPush] exceeding maximum stack depth <100>
abc[

||| overflow user dictionary stack:
||| \overflow_user
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <push#1>
___ [dictStackPush] no more than <100> dicts allowed in stack
abc[

||| underflow user dictionary stack (requires nuser>nsegment):
||| \underflow_user
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <pop#1>
___ [dictStackPop] cannot pop last <user> scope!
abc[

||| inserting spurious left curly:
||| \eval{\!""\__lc__}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <"">
___ [yamParseKey] no closing scope
abc[

||| and scope in plain scope:
||| \&{\foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <abc>
___ [yamFindKey] illegal escape sequence <\&>
abc

||| at scope in and scope:
||| \@{\&{\foo}}
abc[foo_start___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <foo>
___ [filterAt] unknown escape <@>
{ foo_at }foo_end]def

||| incorrect anonymous key:
||| \_#1{\1}{bar}{foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <_>
___ [yamParseKey] found anon _#1{\1} with 2 arguments
abc[

||| and scope in plain scope:
||| \&{\foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <abc>
___ [yamFindKey] illegal escape sequence <\&>
abc

||| incorrect anonymous key:
||| \_#1{\1}{bar}{foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <_>
___ [yamParseKey] found anon _#1{\1} with 2 arguments
abc[

||| some broken XML syntactic sugar:
||| \write{\__fnout__}{device}{\<foo>\<bar>\</bar>\</zut>}
<foo>
<bar>
</bar>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <<>#1>
___ [\<>#1] tag </zut> closes <foo>
abc[

||| XML syntactic sugar underflow:
||| \write{\__fnout__}{device}{\<foo>\<bar>\<>\<>\<>}
<foo>
<bar>
</bar>
</foo>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <<>#1>
___ [\<>#1] XML syntactic sugar stack underflow at file <-> tag </>
abc[

||| XML content syntax error:
||| \<foo>{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| error in $#2:
||| \${stress}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| absent grape node, fetched:
||| \%{nsg}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <%#1>
___ [\%#1] no value associated with <{nsg}>
abc[]def

||| absent grape node, freed:
||| \%free{nsg}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <%free#1>
___ [\free#1] no value associated with <{nsg}>
abc[]def

||| absent grape node, dumped:
||| \%dump{nsg}
# printing node <ROOT>___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <%dump#1>
___ [\dump#1] no value associated with <{nsg}>
abc[]def

||| no such key:
||| \apply{nsk#2}{{a}{b}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk#2>
___ [expand] no definition found for key <nsk#2>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk#2>
___ [\apply#2] key <nsk#2> does not expand
abc[

||| wrong anonymous key:
||| \apply{_#a{\1}}{{a}{b}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <apply#2>
___ [\apply#2] key part not ok
abc[

||| trailing arguments:
||| \apply{_#2{[\1\2]}}{{a}}
___ [\apply#2] (ignoring) trailing arguments
abc[]def

||| argument does not parse:
||| \apply{_#2{[\1\2]}}{{a}{b}{c}{\nsk}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| label does not exist:
||| \begin{nsl}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <begin#2>
___ [\begin#2] env <nsl> does not exist
abc[

||| argument does not parse:
||| \begin{myenv}{{\nsk}{\nsk}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [\begin#2] arguments in env <myenv> did not parse
abc[

||| parse error:
||| \branch{{\let{0<}}{}}
___ [getatom] unexpected token <EOF>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <let#1>
___ [\let#1] expression did not parse
abc[

||| uncaught catch:
||| \catch{towel}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| uncaught (delayed) error:
||| \catch{error}{\!{\nsk}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| catch towel at 6:
||| \set{foo}{0}
\catch{towel}{\while{\let{\foo<10}}{
foo \foo bar\@{\N}
\if{\let{\foo==6}}{\throw{towel}}{}
\setx{foo}{\let{\foo+1}}
}
}
abc[
foo 0 bar
foo 1 bar
foo 2 bar
foo 3 bar
foo 4 bar
foo 5 bar
foo 6 bar
]def

||| argument does not parse:
||| \cmp{eq}{\nsk}{foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| no such mode:
||| \cmp{__}{bar}{foo}
___ [cmp#3] unknown mode <__>
abc[

||| parse error (not fatal, trailing element):
||| \constant{{(c)} boo {}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <constant#1>
___ [\constant#1] spurious element
abc[]def

||| wrong key signature:
||| \def{^zut}{foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <def#2>
___ [\def#2] not a valid key signature: <^zut>
abc[

||| wrong mode:
||| \defined{__}{__}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <defined#2>
___ [\defined#2] invalid type <__>
abc[

||| wrong key signature:
||| \defx{^zut}{foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <defx#2>
___ [\defx#2] not a valid key signature: <^zut>
abc[

||| parse error:
||| \defx{zut}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [\defx#2] argument did not parse
abc[

||| no such file:
||| \dofile{no-such-file}{!+}
___ [\dofile#2] failed to open file <no-such-file>
abc[

||| parse error:
||| \dowhile{\nsk}{1}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| parse error:
||| \dowhile{1}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[1

||| no such env:
||| \end{nse}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <end#1>
___ [\end#2] env <nse> not found
abc[

||| cannot close myenv:
||| \end{myenv}
abc[myenv_end]def

||| can close myenv2:
||| \end{myenv2}
abc[myenv2_end]def

||| cannot define env while in environment:
||| \env{myenv3}{foo}{bar}
abc[]def

||| argument does not parse:
||| \eqt{eq}{\nsk}{1}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| no such mode:
||| \eqt{__}{1}{1}
___ [eqt#3] unknown mode <__>
abc[

||| argument not numeric I:
||| \eqt{eq}{aap}{\one}
abc[0]def

||| argument not numeric II:
||| \eqt{eq}{aap}{\zero}
abc[1]def

||| parse error:
||| \eval{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| no such mode:
||| \f{nsm}{2.5}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <f#2>
___ [\f#2] unknown mode <nsm>
abc[

||| overflow I ?:
||| \f{sign}{111111111111111111111111111111}
abc[1]def

||| overflow II ?:
||| \f{sign}{3e100000}
abc[1]def

||| parse error:
||| \f{sign}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| parse error:
||| \finsert{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| no such mode:
||| \fv{nsm}{{1}{2}{3}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <fv#2>
___ [\fv#2] unknown mode <nsm>
abc[

||| parse error:
||| \fv{sum}{{\zero}{\one}{\nsk}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| this should work:
||| \fv{max}{{\zero}{\one}{2}}
abc[2]def

||| parse error condition:
||| \if{\nsk}{}{}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [\if#3] condition does not parse
abc[

||| parse error if:
||| \if{1}{\nsk}{}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| parse error else:
||| \if{0}{}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| arithmetic exception in f:
||| \f{div}{1}{0}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <f#3>
___ [\f#3] arithmetic exception for operator <div>
abc[0]def

||| syntax error in let:
||| \let{1+}
___ [getatom] unexpected token <EOF>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <let#1>
___ [\let#1] expression did not parse
abc[

||| another syntax error in let:
||| \let{1+sin(1,)}
___ [getatom] empty group not allowed
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <let#1>
___ [\let#1] expression did not parse
abc[

||| callback error in let:
||| \let{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [\let#1] arithmetic error occurred
abc[

||| nested callback error in let:
||| \let{\let{\nsk}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [\let#1] arithmetic error occurred
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [\let#1] arithmetic error occurred
abc[

||| arithmetic exception in let:
||| \let{1/0}
___ [flatten] arithmetic exception for op </>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <let#1>
___ [\let#1] arithmetic error occurred
abc[

||| overflow in let:
||| \let{300**300}
abc[inf]def

||| complicated and correct let expression, including redundant callbacks:
||| \let{\let{sin(\let{\one})}**2+\let{cos(\let{\one})}**2}
abc[1]def

||| complicated and failing let expression:
||| \let{\let{sin(\let{\one})}**2+\let{cos(\let{1/0})}**2}
___ [flatten] arithmetic exception for op </>
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <let#1>
___ [\let#1] arithmetic error occurred
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <let#1>
___ [\let#1] arithmetic error occurred
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <let#1>
___ [\let#1] arithmetic error occurred
abc[

||| parse error:
||| \length{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| no such dictionary stack:
||| \pop{nsds}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <pop#1>
___ [dictStackPop] cannot pop last <user> scope!
abc[

||| no such dictionary stack:
||| \push{nsds}
abc[]def

||| parse error:
||| \roman{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <roman#1>
___ [expand] no definition found for key <roman#1>
abc[

||| convert error:
||| \roman{abc}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <roman#1>
___ [expand] no definition found for key <roman#1>
abc[

||| absent system call:
||| \system{#}
abc[

||| failing system call:
||| \system{ls}{{-#}}
abc[

||| finally a systemcall that should succeed:
||| \system{true}
abc[]def

||| should close myenv:
||| \end{myenv}
abc[myenv_end]def

||| parse error in pivot:
||| \switch{\nsk}{{}{}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| parse error in clause:
||| \switch{foo}{{\nsk}{A}{b}{B}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| parse error in case:
||| \switch{foo}{{foo}{\nsk}{b}{B}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| this should work:
||| \tr{{from}{a-z}{to}{A-Z}{squash}{A-Z}}{squash the bookkeeper}
abc[SQUASH THE BOKEPER]def

||| parse error:
||| \trace{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[]

||| parse error:
||| \textmap{{word}{ucase}}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| wrong signature:
||| \undef{!}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <undef#1>
___ [\undef#1] key <!> not defined in target scope
abc[

||| parse error:
||| \vanish{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| parse error condition:
||| \while{\nsk}{}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| parse error body:
||| \while{1}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| open error:
||| \write{/no/such/file}{copy}{foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <write#3>
___ [yamOutputNew] can not open file </no/such/file> for writing

abc[

||| no such filter:
||| \write{/dev/null}{nsf}{foo}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <write#3>
___ [\write#3] unknown filter <nsf>
abc[

||| parse error:
||| \write{/dev/null}{copy}{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| throw:
||| \write{/dev/null}{copy}{\throw{towel}}
abc[

||| inline file should work:
||| \zinsert{monkey}
abc[0 1 monkey see monkey do
]def

||| parse error:
||| \zinsert{\nsk}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[

||| inline file with parse error:
||| \eval{\zinsert{fox}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <nsk>
___ [expand] no definition found for key <nsk>
abc[0 1

||| delay parse error:
||| \write{\__fnout__}{device}{\!{\nsk}}
___ [zoem] error around input line <474> in <stress.azm>
___ last key seen is <!#2>
___ [filterDevice] ignoring escape <\n>
\nskabc[]def

Done with 96 error tests.
___ [zoem] error occurred
___ last key seen is <ct>
___ [dictStackFree] user dictionary <nsds> not closed in output file <->