Remove defined-ness checks in insert-large-letters.
add contracts to the *-append pict functions
add contract to cellophane
use simple-form-path instead of normalize-path

in the code that decides what to put in DrRacket's pop up
menu that opens file dialogs for the subdirectories of
the place where the current file is saved

closes PR 14634
JIT: fix array-size expression that is handled badly by xform

This bug (in xform, really) appears to be responsible for recent "JIT
buffer overflow" crashes. It could also cause other memory-corruption
crashes.

The bug could be triggered by any program that uses operators like
`+`, `<`, and `bitwise-ior` on more than 2 and less than 6 operands
(which is a lot of programs), but only if a certain allocation and
GC pattern happens at just the right time (which is why a crash was
relatively rare).

Merge to v6.1
xform: fix bad parsing of array sizes

A size expression N+M for a literal integer N was parsed as just N.
Report an error when that case happens (since it's difficult to
handle) instead of mishandling it.

Merge to v6.1
fix drracket's stacktrace handling in the case that something strange
shows up as the source field in an exception record
Rackety
at-exp and scribble: adjust reader to compose better with readtable extensions

The `at-exp` reader now delays picking up the current readtable until
`read`/`read-syntax` is called. Also, it uses the new 'dynamic configuration
of readers for the command and datum parts of an @-form, which delays a
decision of readtable on each part until reading the part.

Thanks to Alexander Knauth for sorting out pieces of the puzzle.
Scribble Latex/PDF: fix quote and backquote rendering

When text is literally a quote (ASCII 39) or backquote (ASCII 96),
then render it in a way that prevents LaTeX from converting to
curly variants.
scribble: fix documentation for `tt` and `racketfont`

The `tt` and `racketfont` functions treat their arguments strangely,
applying styles only to immediate strings and symbols.

Add `racketplainfont`, which is a non-strange version of `racketfont`.
add contract-correct caveat to contract violation error messages
Fix kw in typed/pict

Closes PR 14637
Fixing flawed test. The result arity does matter.
meta/pkg-build: change summary to include all docs

Include documentation that was part of the installer, because a package catalog
may want to show documentation links independent of whether the package
was included in a distribution.
meta/pkg-build: add `#:extra-packages` option
meta/pkg-build: fix break-enabled status in VM-running thread
meta/pkg-push: allow separate src and dest catalog URLs

Also, report failures as errors, so that the result code is
helpful.
use test submodule in lazy racket tests
fix typo