Fix SIGCHLD suspension for fork()-based file locks (i.e., Solaris).
Also, fix commit ea51d32e, which broke termination of process groups
where the main process terminated before the rest of the group,
because it used sigwait() before the terminate action.
Make the GC always use the mmap() block cache, since mmap() on Solaris
allocates much more than a page when a single page is requested.
Enable places and threads by default on x86 and x86_64.
Fix pthread-related compilation flags.
the check is to avoid drawing check syntax arrows
that go too far away; this may not be really possible
anymore, but in the past the old limit could be hit with
a long file and an arrow that went its length
Add `dimension-integer?', `position-integer?',
`spacing-integer?', and `positive-dimension-integer?' to make
the documentation, especially, more parameterized over the
limit.
Also, make the slider limits match the dimension/position limit,
since they're often related.
Things go wrong with, for example, a canvas that is
larger than 32k in a dimension. It looks like there's
a problem on each platform, although not exactly the
same problem. Meanwhile, even larger scrollable panels
can work ok on platforms other than Windows.
Closes PR 13849
I'm not sure if the precise details of how this function behaves
(specifically that it copies snips that aren't cacheable) is
important, but I suspect the implementation is more authoritative
that the docs in this case, so document what it really does.
closes PR 13956
since snips will silently fail to be inserted when
they are already inserted and some ports just take
snips and insert them into editors without copying
them first
closes PR 13960
closes PR 13946
This is probably not the optimal way to make this change; better would
have been to refactor the existing provide/contract implementation so
it does not glom the provides all together in the first place (instead
of pulling them out afterwards). Do it this way anyways, because I
have a big pile of contract-system changes in another branch that also
changes around how provide/contract works: this way will be much
easier to rebase those changes off of.
The range of values used to represent "improper lists"
of length 36 to 65 overlapped with the range of values
used to represent other things.
This bug is the new chapion of the "how did we not hit that
earlier?" category. The bug was introduced around v300, at
the latest.
when switching to white-on-black mode (or back).
this causes the cursor in embedded editors to pick up the right colors
(since it is selected by the inverse of the background color of the style
of the enclosing editor snip)
closes PR 13943
This reverts commit ac20e7fc0d.
Using the installation name name seems right, but it creates sandbox
trouble, since finding the instalation name requires several
path-chasing steps. I think the sandbox problem shoudl be fixed,
somehow, but since I don't have a good idea right now, I'm reverting
the PLaneT change.
The intent of disallowing `handle-evt?' arguments to `wrap-evt',
`handle-evt', and `chaperone-evt' was that those extra wrappers
break the tail-handling behavior that is almost certainly intended
when `handle-evt' is used. The extra checking was not obviously
worthwhile (we don't have any checked "this procedure should be called
in tail position" annotations, after all), and pushing the distinction
through Typed Racket looked particularly inconvenient.
Dropping the constraint is trivial if we say that wrapping a
`handle-evt' result disables the tail invocation of the handler
procedure.
