Silence many eshell compilation warnings

* lisp/eshell/em-tramp.el: Adjust requires.
(eshell-parse-command): Autoload.

* lisp/eshell/em-xtra.el: Adjust requires.
(eshell-parse-command): Autoload.

* lisp/eshell/esh-ext.el: Adjust requires.
(eshell-parse-command, eshell-close-handles): Autoload.

* lisp/eshell/esh-io.el: Adjust requires.
(eshell-output-filter): Autoload.

* lisp/eshell/esh-util.el: No need to load tramp when compiling.
(tramp-file-name-structure, ange-ftp-ls, ange-ftp-file-modtime): Declare.
(eshell-parse-ange-ls): Require ange-ftp and tramp.

* lisp/eshell/em-alias.el, lisp/eshell/em-banner.el, lisp/eshell/em-basic.el:
* lisp/eshell/em-cmpl.el, lisp/eshell/em-glob.el, lisp/eshell/em-pred.el:
* lisp/eshell/em-prompt.el, lisp/eshell/em-rebind.el, lisp/eshell/em-smart.el:
* lisp/eshell/em-term.el, lisp/eshell/esh-arg.el, lisp/eshell/esh-mode.el:
* lisp/eshell/esh-opt.el, lisp/eshell/esh-proc.el:
* lisp/eshell/esh-var.el: Adjust requires.

* lisp/eshell/eshell.el: Do not require esh-util twice.
(eshell-add-input-to-history): Declare.
(eshell-command): Check history module is active before using it.

1 files changed, 6 insertions, 2 deletions

diff --git a/lisp/eshell/esh-io.el b/lisp/eshell/esh-io.el
index 66172c8f66..4edb47e475 100644
--- a/lisp/eshell/esh-io.el
+++ b/lisp/eshell/esh-io.el
@@ -58,9 +58,11 @@
 
 (provide 'esh-io)
 
+(require 'esh-arg)
+(require 'esh-util)
+
 (eval-when-compile
-  (require 'cl-lib)
-  (require 'eshell))
+  (require 'cl-lib))
 
 (defgroup eshell-io nil
   "Eshell's I/O management code provides a scheme for treating many
@@ -465,6 +467,8 @@ after all printing is over with no argument."
   (eshell-print object)
   (eshell-print "\n"))
 
+(autoload 'eshell-output-filter "esh-mode")
+
 (defun eshell-output-object-to-target (object target)
   "Insert OBJECT into TARGET.
 Returns what was actually sent, or nil if nothing was sent."