Allow multiline task definitions (or document how to use them, if they are already allowed)

[matt-gardner]

For terminal editing, keeping lines to a maximum of 80 characters can be very important. If there are a lot of parameters that a particular task needs to use, it is easy to exceed the 80 character line limit, making terminal editing a pain. It would be nice if ducttape allowed multiline task definitions. An example follows.

Task definition:

task RunInference :: base=@ main_class=@ kb_file=@ sem_params=@ kb=@ iters=@
mem=@ num_docs=@ output_dir=@ num_threads=@ {

Gives this error:

ERROR: Missing opening { brace for task block.
/home/mg1/clone/OntologyLearner/entity_linking_ducttape/entity_linking.tape:6
mem=@ num_docs=@ output_dir=@ num_threads=@ {

Second try, trying to escape the newline with a backslash:

ERROR: Illegal character at start of parameter variable name
/home/mg1/clone/OntologyLearner/entity_linking_ducttape/entity_linking.tape:5
task RunInference :: base=@ main_class=@ kb_file=@ sem_params=@ kb=@ iters=@ \

[dowobeha]

Multi-line task definitions are allowed.

However, at the start of each new line, you need to re-specify :: or < or

.

The following should work:

task RunInference :: base=@ main_class=@ kb_file=@ sem_params=@ kb=@ iters=@
:: mem=@ num_docs=@ output_dir=@ num_threads=@ {

[matt-gardner]

Thanks, that did indeed work. Is there a place where this is or should be
documented?

On Mon, Feb 4, 2013 at 11:02 AM, Lane Schwartz notifications@github.comwrote:

Multi-line task definitions are allowed.

However, at the start of each new line, you need to re-specify :: or < or

.

The following should work:

task RunInference :: base=@ main_class=@ kb_file=@ sem_params=@ kb=@
iters=@
:: mem=@ num_docs=@ output_dir=@ num_threads=@ {

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/147#issuecomment-13083611.

[dowobeha]

Yes, this should be documented, but I don't know where. I haven't done much
with the documentation.

[jhclark]

Either put this in https://github.com/jhclark/ducttape/blob/master/tutorial/01-11-shorthand-variables.tape or make a new file for it in that directory.

*.tape in the tutorial directory automatically gets compiled into https://github.com/jhclark/ducttape/blob/master/tutorial/TUTORIAL.md (and a LaTeX file) by https://github.com/jhclark/ducttape/blob/master/build-support/doc.sh

All of those files are also tested for non-zero exit codes by https://github.com/jhclark/ducttape/blob/master/build-support/test-regression.sh. So that the tutorial is guaranteed to compile.