Add command 'eat-send-password'

* eat.el (eat-send-password): New command.
* eat.texi (Password Input): New chapter.

eat.el

@@ -5662,6 +5662,15 @@ EVENT is the mouse event."
       ;; Insert the text without putting it onto the kill ring.
       (eat-term-send-string-as-yank eat-terminal pasted-text))))
 
+(defun eat-send-password ()
+  "Read password from minibuffer and send it to the terminal."
+  (declare (interactive-only t))
+  (interactive)
+  (unless eat-terminal
+    (user-error "Process not running"))
+  (eat-term-send-string eat-terminal (read-passwd "Password: "))
+  (eat-self-input 1 'return))
+
 ;; When changing these keymaps, be sure to update the manual, README
 ;; and commentary.
 (defvar eat-mode-map

eat.texi

@@ -62,6 +62,7 @@ Basic Operations
 * Keyboard::            Most keyboard keys are captured by Eat.
 * Mouse::               Eat supports mouse.
 * Input Modes::         Input modes for various use-cases.
+* Password Input::      Safely inputting credentials.
 
 Advanced Customizations
 * Shell Integration::   Getting the most from Eat and your shell.
@@ -448,6 +449,25 @@ other parts of the Eat buffer, they search in the Eat buffer.  If
 Input history is not loaded from the shell history file, to do that,
 @xref{Line Mode Integration}.
 
+@node Password Input
+@cindex password input
+@cindex credential input
+@cindex input, password
+@cindex input, credential
+@chapter Password Input
+
+By default, every keystroke gets recorded in the lossage, which can be
+seen by pressing @kbd{C-h l}.  This is actually a good thing, unless
+you're inputting password.
+
+@findex eat-send-command
+Emacs doesn't record keystrokes when a password is read from the
+minibuffer.  However, when the password prompt is in the terminal, the
+keys you use to type in your password gets recorded.  To prevent this
+from happening, you can use the command @command{eat-send-command},
+it'll read password from the minibuffer and send it.  Since the
+password is read from the minibuffer, it's not recorded.
+
 @part Part III:@* Advanced Customizations
 
 @node Shell Integration