Don't quote nil and t in doc strings

This is as per "Tips for Documentation Strings" in the elisp manual.
For consistency, do the same in diagnostics and comments.

2 files changed, 2 insertions, 2 deletions

diff --git a/lisp/eshell/esh-mode.el b/lisp/eshell/esh-mode.el
index 222e801301b..0dac4780690 100644
--- a/lisp/eshell/esh-mode.el
+++ b/lisp/eshell/esh-mode.el
@@ -206,7 +206,7 @@ This is used by `eshell-watch-for-password-prompt'."
 
 ;; Internal Variables:
 
-;; these are only set to `nil' initially for the sake of the
+;; these are only set to nil initially for the sake of the
 ;; byte-compiler, when compiling other files which `require' this one
 (defvar eshell-mode nil)
 (defvar eshell-mode-map nil)
diff --git a/lisp/eshell/esh-util.el b/lisp/eshell/esh-util.el
index 697f97e0460..170779fc5cd 100644
--- a/lisp/eshell/esh-util.el
+++ b/lisp/eshell/esh-util.el
@@ -33,7 +33,7 @@
 ;;; User Variables:
 
 (defcustom eshell-stringify-t t
-  "If non-nil, the string representation of t is 't'.
+  "If non-nil, the string representation of t is \"t\".
 If nil, t will be represented only in the exit code of the function,
 and not printed as a string.  This causes Lisp functions to behave
 similarly to external commands, as far as successful result output."