[Octave-bug-tracker] [bug #39303] print_usage not working for some functions in signal Octave-Forge package

[Rik]

Update of bug #39303 (project octave):

                Category:           Documentation => Octave Forge Package   
                 Summary: print_usage not working => print_usage not working
for some functions in signal Octave-Forge package

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Follow-up Comment #4:

Okay, I found the problem.  It is with the butter.m file.

The start of the help text is


## Generate a butterworth filter.\n
## Default is a discrete space (Z) filter.\n
## \n


print_usage prints either 1) the help text until the first double newline
"\n\n", 2) all of the text if it is short, or 3) the first 80 characters if
the help text is long.

In this case, the comment characters '##' are stripped but that still leaves a
space at the beginning of the line so that "\n \n" doesn't match.

I don't know if this is the greatest, but the solution is simply to remove the
space in butter.m.


## Generate a butterworth filter.\n
## Default is a discrete space (Z) filter.\n
##\n



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