On 3/13/19, 3:00 AM, "David Kastrup" <[email protected]> wrote:
Carl Sorensen <[email protected]> writes:
> On 3/12/19, 6:42 AM, "Federico Bruni" <[email protected]> wrote:
> %\fret-diagram-terse "x;o;o;5-1-(;5-1;7-3-);" % this returns "Wrong
> type argument in position 1"
> }
>
> In order to have two indications on the same string (the end of the barre
plus another fret) you will need to use either the fret-diagram or the
fret-diagram-verbose format. fret-diagram-terse only handles one indication
per string.
Is that a restriction inherent in the format or in the code? The error
message (if you want to call it that) seems less than helpful. Like
when you are in a foreign country and ask your table neighbor to pass
the salt and they commit ritual suicide. Doesn't inspire confidence.
I think the limitation is inherent in the format. The markup argument in
question says the following:
Mute string 6.
Have string 5 open.
Have string 4 open.
Start a barre on string 3 at the fifth fret with the first finger.
Have the first finger press string 2 at the fifth fret.
Have the 3rd finger press string 1 at the seventh fret and end a barre there.
The error message comes from the inability to end a barre on the 7th fret since
there was never one started.
I agree that the error message is pretty abysmal; there is no error checking in
the fret-diagram-terse procedure, so you get whatever results from trying
inappropriate things.
I think there are two action items that result from this report. One is to
make clear in the documentation that only a single fret can be affected per
string in a fret-diagram-terse markup. Another is to at least put some
rudimentary error checking in fret-diagram-terse. I'll look into both.
Thanks,
Carl
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