; Don't require 'eshell' in other Eshell files

This isn't necessary and just makes unloading Eshell harder.

* lisp/eshell/em-banner.el:
* lisp/eshell/em-basic.el:
* lisp/eshell/em-cmpl.el:
* lisp/eshell/em-glob.el:
* lisp/eshell/em-prompt.el:
* lisp/eshell/em-rebind.el:
* lisp/eshell/em-smart.el:
* lisp/eshell/em-term.el:
* lisp/eshell/em-tramp.el:
* lisp/eshell/em-xtra.el:
Stop requiring 'eshell', and instead require specific subcomponents.

* lisp/eshell/em-hist.el: Stop requiring 'eshell' and 'em-pred'
(extension modules shouldn't require each other so they can be
independent).
(eshell-hist-parse-modifier): Ensure this can only be called when
'em-pred' is in use, and declare the relevant function.

* lisp/eshell/eshell.el (eshell-non-interactive-p): Move from here...
* lisp/eshell/esh-mode.el (eshell-non-interactive-p): ... to here.

13 files changed, 15 insertions, 22 deletions

diff --git a/lisp/eshell/em-banner.el b/lisp/eshell/em-banner.el
index 8bc497bdeb3..2bee50b80a4 100644
--- a/lisp/eshell/em-banner.el
+++ b/lisp/eshell/em-banner.el
@@ -43,7 +43,6 @@
 
 (require 'esh-util)
 (require 'esh-mode)
-(require 'eshell)
 
 ;;;###autoload
 (progn
diff --git a/lisp/eshell/em-basic.el b/lisp/eshell/em-basic.el
index bfff3bdf56e..016afe811b2 100644
--- a/lisp/eshell/em-basic.el
+++ b/lisp/eshell/em-basic.el
@@ -53,9 +53,10 @@
 
 ;;; Code:
 
-(require 'esh-util)
-(require 'eshell)
+(require 'esh-cmd)
+(require 'esh-io)
 (require 'esh-opt)
+(require 'esh-util)
 
 ;;;###autoload
 (progn
diff --git a/lisp/eshell/em-cmpl.el b/lisp/eshell/em-cmpl.el
index 2439f1ed804..af8ac4278f1 100644
--- a/lisp/eshell/em-cmpl.el
+++ b/lisp/eshell/em-cmpl.el
@@ -74,9 +74,7 @@
 (require 'esh-util)
 (require 'em-dirs)
 
-(eval-when-compile
-  (require 'cl-lib)
-  (require 'eshell))
+(eval-when-compile (require 'cl-lib))
 
 ;;;###autoload
 (progn
diff --git a/lisp/eshell/em-glob.el b/lisp/eshell/em-glob.el
index 716f5c32b87..c7360fb246e 100644
--- a/lisp/eshell/em-glob.el
+++ b/lisp/eshell/em-glob.el
@@ -49,8 +49,9 @@
 
 ;;; Code:
 
+(require 'esh-arg)
+(require 'esh-module)
 (require 'esh-util)
-(eval-when-compile (require 'eshell))
 
 ;;;###autoload
 (progn
diff --git a/lisp/eshell/em-hist.el b/lisp/eshell/em-hist.el
index 6e0e471d910..4796df1604e 100644
--- a/lisp/eshell/em-hist.el
+++ b/lisp/eshell/em-hist.el
@@ -59,8 +59,6 @@
 (require 'ring)
 (require 'esh-opt)
 (require 'esh-mode)
-(require 'em-pred)
-(require 'eshell)
 
 ;;;###autoload
 (progn
@@ -769,6 +767,8 @@ matched."
 
 (defun eshell-hist-parse-modifier (hist reference)
   "Parse a history modifier beginning for HIST in REFERENCE."
+  (cl-assert (eshell-using-module 'em-pred))
+  (declare-function eshell-parse-modifiers "em-pred" ())
   (let ((here (point)))
     (insert reference)
     (prog1
diff --git a/lisp/eshell/em-prompt.el b/lisp/eshell/em-prompt.el
index b3a0fadf618..9f9e58e83d7 100644
--- a/lisp/eshell/em-prompt.el
+++ b/lisp/eshell/em-prompt.el
@@ -27,8 +27,6 @@
 ;;; Code:
 
 (require 'esh-mode)
-(eval-when-compile (require 'eshell))
-
 (require 'text-property-search)
 
 ;;;###autoload
diff --git a/lisp/eshell/em-rebind.el b/lisp/eshell/em-rebind.el
index f147d432300..75a2848a9d5 100644
--- a/lisp/eshell/em-rebind.el
+++ b/lisp/eshell/em-rebind.el
@@ -24,7 +24,6 @@
 ;;; Code:
 
 (require 'esh-mode)
-(eval-when-compile (require 'eshell))
 
 ;;;###autoload
 (progn
diff --git a/lisp/eshell/em-smart.el b/lisp/eshell/em-smart.el
index ca04c429785..154ff760212 100644
--- a/lisp/eshell/em-smart.el
+++ b/lisp/eshell/em-smart.el
@@ -69,7 +69,6 @@
 ;;; Code:
 
 (require 'esh-mode)
-(eval-when-compile (require 'eshell))
 
 ;;;###autoload
 (progn
diff --git a/lisp/eshell/em-term.el b/lisp/eshell/em-term.el
index a4d777e4a0d..ab26da857b7 100644
--- a/lisp/eshell/em-term.el
+++ b/lisp/eshell/em-term.el
@@ -34,7 +34,6 @@
 (require 'cl-lib)
 (require 'esh-util)
 (require 'esh-ext)
-(eval-when-compile (require 'eshell))
 (require 'term)
 
 ;;;###autoload
diff --git a/lisp/eshell/em-tramp.el b/lisp/eshell/em-tramp.el
index 13dd62e1617..94eb9797033 100644
--- a/lisp/eshell/em-tramp.el
+++ b/lisp/eshell/em-tramp.el
@@ -29,8 +29,7 @@
 (require 'esh-cmd)
 
 (eval-when-compile
-  (require 'esh-mode)
-  (require 'eshell))
+  (require 'esh-mode))
 
 (require 'tramp)
 
diff --git a/lisp/eshell/em-xtra.el b/lisp/eshell/em-xtra.el
index defaa7b2887..45c3ea3c0fc 100644
--- a/lisp/eshell/em-xtra.el
+++ b/lisp/eshell/em-xtra.el
@@ -25,8 +25,6 @@
 
 (require 'cl-lib)
 (require 'esh-util)
-(eval-when-compile
-  (require 'eshell))
 
 ;; There are no items in this custom group, but eshell modules (ab)use
 ;; custom groups.
diff --git a/lisp/eshell/esh-mode.el b/lisp/eshell/esh-mode.el
index 1b8f5ff8018..e0af3579edf 100644
--- a/lisp/eshell/esh-mode.el
+++ b/lisp/eshell/esh-mode.el
@@ -200,6 +200,11 @@ This is used by `eshell-watch-for-password-prompt'."
 (defvar eshell-first-time-p t
   "A variable which is non-nil the first time Eshell is loaded.")
 
+(defvar eshell-non-interactive-p nil
+  "A variable which is non-nil when Eshell is not running interactively.
+Modules should use this variable so that they don't clutter
+non-interactive sessions, such as when using `eshell-command'.")
+
 ;; Internal Variables:
 
 ;; these are only set to nil initially for the sake of the
diff --git a/lisp/eshell/eshell.el b/lisp/eshell/eshell.el
index 7a7ece5cb7c..0bfc0413cbf 100644
--- a/lisp/eshell/eshell.el
+++ b/lisp/eshell/eshell.el
@@ -267,10 +267,7 @@ information on Eshell, see Info node `(eshell)Top'."
 (define-obsolete-function-alias 'eshell-return-exits-minibuffer
   #'eshell-command-mode "28.1")
 
-(defvar eshell-non-interactive-p nil
-  "A variable which is non-nil when Eshell is not running interactively.
-Modules should use this variable so that they don't clutter
-non-interactive sessions, such as when using `eshell-command'.")
+(defvar eshell-non-interactive-p)       ; Defined in esh-mode.el.
 
 (declare-function eshell-add-input-to-history "em-hist" (input))