Fix handling of Eshell debug modes

Previously, these were enabled/disabled at byte-compilation time, but
we want to control them at runtime.

* lisp/eshell/esh-cmd.el (eshell-eval-command): Call
'eshell-debug-command-start'.
(eshell-manipulate): Check 'eshell-debug-command' at runtime.  Update
callers.
(eshell-debug-command): Move to "esh-util.el".
(eshell/eshell-debug, pcomplate/eshell-mode/eshell-debug): Move to
"em-basic.el".
(eshell-debug-show-parsed-args): Update implementation.

* lisp/eshell/esh-util.el (eshell-debug-command): Move from
"esh-cmd.el" and convert to a list.
(eshell-debug-command-buffer): New variable.
(eshell-condition-case): Check 'eshell-handle-errors' at runtime.
(eshell-debug-command-start): New function.
(eshell-debug-command): Move from "esh-cmd.el" and convert to a macro.

* lisp/eshell/em-basic.el (eshell/eshell-debug)
(pcomplete/eshell-mode/eshell-debug): Move from "esh-cmd.el" and
reimplement.

* lisp/eshell/eshell.el (eshell-command): Pass the original input to
'eshell-eval-command'.

* doc/misc/eshell.texi (Built-ins): Update documentation for
'eshell-debug'.

1 files changed, 13 insertions, 4 deletions

diff --git a/doc/misc/eshell.texi b/doc/misc/eshell.texi
index f8f60bae13a..ee6c0f10b34 100644
--- a/doc/misc/eshell.texi
+++ b/doc/misc/eshell.texi
@@ -619,10 +619,19 @@ environment.
 @item eshell-debug
 @cmindex eshell-debug
 Toggle debugging information for Eshell itself.  You can pass this
-command the argument @code{errors} to enable/disable Eshell trapping
-errors when evaluating commands, or the argument @code{commands} to
-show/hide command execution progress in the buffer @code{*eshell last
-cmd*}.
+command one or more of the following arguments:
+
+@itemize @bullet
+
+@item
+@code{error}, to enable/disable Eshell trapping errors when
+evaluating commands; or
+
+@item
+@code{form}, to show/hide Eshell command form manipulation in the
+buffer @code{*eshell last cmd*}.
+
+@end itemize
 
 @item exit
 @cmindex exit