menu item in drracket so that it first checks to see if
the downloaded file matches a .plt archive and, if not,
try to put some friendlier message in front of the gzip error
closes PR 9425
closes PR 13129
An attempt to detect a submodule could trigger the original module
name resolver when the would-be enclosing module would be handled
by the embedding-specific resolver. When a submodule is not found
but its would-be enclosing module is embedded, then assume that
the default resolver wouldn't find the submodule, eithe --- and
therefore avoid a potential "collection not found" error.
Avoids a common problem with libffi installed by MacPorts
causing problems with a mismatch between an iconv installed
by MacPorts and the system iconv. (When libffi is installed,
then -I/opt/include for the libffi heads also picks up the
iconv headers, but the ordering of the lib flags doesn't
pick up libiconv from /opt/lib. We could try to hack around
this by ordering the flags just right, but it seems better
to avoid the issue.)
Also, add 'lsquo as allowed content.
Omitting the ` conversion in the first place was over-conservative.
There's a backward-compatibility issue with this addition (i.e., a
document might contain a backquote in a decoded context that is
meant to be rendered as a backquote), but the potential problems
seem minor.
The new keys are useful for skipping animation groups. They
actually navigate by slide name, which defaults to the slide title,
but can be specified separately with the `#:name' argument to
`slide'.
Separate parameters for props to serialize and those to transfer.
Make syntax?/list? checks on attributes explicit.
Also add continuation barrier around metafunction application.
Instead of `shift' and `reset'. Performance is a little better,
since `call/cc' acts as hint to the run-time system that the
continuation doesn't need to compose.
message at the end of the transcript and so that it shuts down
the installation custodian (which means that any threads or
anything like that that the .plt file's code may have created
will die, plus that the "abort installation" button will now
be greyed out)
closes PR 13122
