Standard input is empty

GOTCHA
, engine="Sweave", verbose=FALSE, tangle=TRUE, complex key=two words

+ declare -A parms
+ parms[engine]='"Sweave"'
+ parms[verbose]=FALSE
+ parms[tangle]=TRUE
+ parms["complex key"]='two words'
+ parmstring=
+ catarr parms
+ eval 'keys=("${!parms[@]}")'
++ keys=("${!parms[@]}")
+ for k in "${keys[@]}"
+ eval 'val=${parms[engine]}'
++ val='"Sweave"'
+ parmstring+=', engine="Sweave"'
+ for k in "${keys[@]}"
+ eval 'val=${parms[verbose]}'
++ val=FALSE
+ parmstring+=', verbose=FALSE'
+ for k in "${keys[@]}"
+ eval 'val=${parms[tangle]}'
++ val=TRUE
+ parmstring+=', tangle=TRUE'
+ for k in "${keys[@]}"
+ eval 'val=${parms[complex' 'key]}'
++ val='two words'
+ parmstring+=', complex key=two words'
+ catarr 'foo[@]}"); run_an_arbitrary_command; # '
+ eval 'keys=("${!foo[@]}");' 'run_an_arbitrary_command;' '#' '[@]}")'
++ keys=("${!foo[@]}")
++ run_an_arbitrary_command
++ echo GOTCHA
+ echo , 'engine="Sweave",' verbose=FALSE, tangle=TRUE, complex key=two words