Experimenting with `goto-char' and `re-search-backwards' indicates
that this limitation no longer applies.  The rewrite using nadvice in
commit 8b62d7427e12bbf07ab3454cc061a6b43ded56dd might have eliminated
this issue.

This lifts the restriction of context arguments needing to be
functions, when calling trace functions from lisp code.

(trace--read-extra-args, trace-entry-message, trace-entry-message):
Move the output formatting already used for interactive context into
the trace-*-message functions for use in non-interactive cases as
well.  Previously it was necessary for context functions to format
their output in a trace-aware manner, making a custom wrapper function
necessary to obtain well-formatted output even when the desired
context had an existing function.

(trace-function-internal, trace-make-advice): Move the generation of
an 'empty' context function into `trace-make-advice', which now takes
care of generating a function for any non-function context.

(trace-make-context): New function returning a context function for
an expression argument; extracted from `trace--read-extra-args'.
(trace--read-extra-args, trace-make-advice): Call it.

* doc/lispref/debugging.texi: Update documentation.

Make `after-load' the final argument

This provides greater consistency with the commands which do not have
an AFTER-LOAD argument.

Make `after-load' the final argument

This provides greater consistency with the commands which do not have
an AFTER-LOAD argument.