Add support for lexical variables to the debugger's `e' command.

* lisp/emacs-lisp/debug.el (debug): Don't let-bind the debugger-outer-*
vars, except for debugger-outer-match-data.
(debugger-frame-number): Move check for "on a function call" from
callers into it.  Add `skip-base' argument.
(debugger-frame, debugger-frame-clear): Simplify accordingly.
(debugger-env-macro): Only reset the state stored in non-variables,
i.e. current-buffer and match-data.
(debugger-eval-expression): Rewrite using backtrace-eval.
* lisp/subr.el (internal--called-interactively-p--get-frame): Remove.
(called-interactively-p):
* lisp/emacs-lisp/edebug.el (edebug--called-interactively-skip): Use the new
`base' arg of backtrace-frame instead.
* src/eval.c (set_specpdl_old_value): New function.
(unbind_to): Minor simplification.
(get_backtrace_frame): New function.
(Fbacktrace_frame): Use it.  Add `base' argument.
(backtrace_eval_unrewind, Fbacktrace_eval): New functions.
(syms_of_eval): Export backtrace-eval.
* src/xterm.c (x_focus_changed): Simplify.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 56fe20fda98..6542703adbb 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,13 @@
+2013-07-26  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+        * eval.c (set_specpdl_old_value): New function.
+        (unbind_to): Minor simplification.
+        (get_backtrace_frame): New function.
+        (Fbacktrace_frame): Use it.  Add `base' argument.
+        (backtrace_eval_unrewind, Fbacktrace_eval): New functions.
+        (syms_of_eval): Export backtrace-eval.
+        * xterm.c (x_focus_changed): Simplify.
+
 2013-07-25  Paul Eggert  <eggert@cs.ucla.edu>
 
         * fileio.c (Finsert_file_contents): Avoid double-close (Bug#14936).