10 files changed, 15 insertions, 15 deletions
diff --git a/lisp/progmodes/ada-xref.el b/lisp/progmodes/ada-xref.el
index 6b611e6f99b..771dc2a3da1 100644
--- a/lisp/progmodes/ada-xref.el
+++ b/lisp/progmodes/ada-xref.el
@@ -954,7 +954,7 @@ Return new value of PROJECT."
 	(append (mapcar 'directory-file-name compilation-search-path)
 		ada-search-directories))
 
-  ;; return 't', for decent display in message buffer when called interactively
+  ;; return t, for decent display in message buffer when called interactively
   t)
 
 (defun ada-find-references (&optional pos arg local-only)
diff --git a/lisp/progmodes/cc-defs.el b/lisp/progmodes/cc-defs.el
index d8854f4b882..fd4bfb3b921 100644
--- a/lisp/progmodes/cc-defs.el
+++ b/lisp/progmodes/cc-defs.el
@@ -2017,10 +2017,10 @@ The second argument can optionally be a docstring.  The rest of the
 arguments are one or more repetitions of LANG VAL where LANG specifies
 the language(s) that VAL applies to.  LANG is the name of the
 language, i.e. the mode name without the \"-mode\" suffix, or a list
-of such language names, or `t' for all languages.  VAL is a form to
+of such language names, or t for all languages.  VAL is a form to
 evaluate to get the value.
 
-If LANG isn't `t' or one of the core languages in CC Mode, it must
+If LANG isn't t or one of the core languages in CC Mode, it must
 have been declared with `c-add-language'.
 
 Neither NAME, LANG nor VAL are evaluated directly - they should not be
@@ -2030,7 +2030,7 @@ VAL to evaluate parts of it directly.
 When VAL is evaluated for some language, that language is temporarily
 made current so that `c-lang-const' without an explicit language can
 be used inside VAL to refer to the value of a language constant in the
-same language.  That is particularly useful if LANG is `t'.
+same language.  That is particularly useful if LANG is t.
 
 VAL is not evaluated right away but rather when the value is requested
 with `c-lang-const'.  Thus it's possible to use `c-lang-const' inside
@@ -2365,7 +2365,7 @@ fallback definition for all modes, to break the cycle).")
 
 (defun c-find-assignment-for-mode (source-pos mode match-any-lang _name)
   ;; Find the first assignment entry that applies to MODE at or after
-  ;; SOURCE-POS.  If MATCH-ANY-LANG is non-nil, entries with `t' as
+  ;; SOURCE-POS.  If MATCH-ANY-LANG is non-nil, entries with t as
   ;; the language list are considered to match, otherwise they don't.
   ;; On return SOURCE-POS is updated to point to the next assignment
   ;; after the returned one.  If no assignment is found,
diff --git a/lisp/progmodes/cc-engine.el b/lisp/progmodes/cc-engine.el
index 823d795b6de..06b03a24bd6 100644
--- a/lisp/progmodes/cc-engine.el
+++ b/lisp/progmodes/cc-engine.el
@@ -7972,7 +7972,7 @@ comment at the start of cc-engine.el for more info."
   ;; This should be called with point inside an argument list.
   ;;
   ;; Only one level of enclosing parentheses is considered, so for
-  ;; instance `nil' is returned when in a function call within an asm
+  ;; instance nil is returned when in a function call within an asm
   ;; operand.
   ;;
   ;; This function might do hidden buffer changes.
diff --git a/lisp/progmodes/cc-fonts.el b/lisp/progmodes/cc-fonts.el
index 44172b05a56..ad564f7c3df 100644
--- a/lisp/progmodes/cc-fonts.el
+++ b/lisp/progmodes/cc-fonts.el
@@ -1772,8 +1772,8 @@ on level 2 only and so aren't combined with `c-complex-decl-matchers'."
 ;; 		       "\\|"
 ;; 		       (c-lang-const c-symbol-key)
 ;; 		       "\\)")
-;; 	       `((c-font-lock-declarators limit t nil) ; That `nil' says use `font-lock-variable-name-face';
-;; 					; `t' would mean `font-lock-function-name-face'.
+;; 	       `((c-font-lock-declarators limit t nil) ; That nil says use `font-lock-variable-name-face';
+;; 					; t would mean `font-lock-function-name-face'.
 ;; 		 (progn
 ;; 		   (c-put-char-property (match-beginning 0) 'c-type
 ;; 					'c-decl-id-start)
diff --git a/lisp/progmodes/cc-guess.el b/lisp/progmodes/cc-guess.el
index 20534737d8a..ba23a75ff22 100644
--- a/lisp/progmodes/cc-guess.el
+++ b/lisp/progmodes/cc-guess.el
@@ -91,7 +91,7 @@ The offset of a line included in the indent information returned by
 (defcustom c-guess-region-max 50000
   "The maximum region size for examining indent information with `c-guess'.
 It takes a long time to examine indent information from a large region;
-this option helps you limit that time. `nil' means no limit."
+this option helps you limit that time. nil means no limit."
   :version "24.1"
   :type 'integer
   :group 'c)
@@ -465,7 +465,7 @@ the absolute file name of the file if STYLE-NAME is nil."
 (defun c-guess-dump-guessed-style (&optional printer)
   "Show the guessed style.
 `pp' is used to print the style but if PRINTER is given,
-PRINTER is used instead. If PRINTER is not `nil', it
+PRINTER is used instead. If PRINTER is not nil, it
 is called with one argument, the guessed style."
   (interactive)
   (let ((style (c-guess-make-style c-guess-guessed-basic-offset
diff --git a/lisp/progmodes/cperl-mode.el b/lisp/progmodes/cperl-mode.el
index 2acfc104cf3..d6f6f3b25b0 100644
--- a/lisp/progmodes/cperl-mode.el
+++ b/lisp/progmodes/cperl-mode.el
@@ -282,7 +282,7 @@ This is in addition to cperl-continued-statement-offset."
 
 (defcustom cperl-indent-wrt-brace t
   "*Non-nil means indent statements in if/etc block relative brace, not if/etc.
-Versions 5.2 ... 5.20 behaved as if this were `nil'."
+Versions 5.2 ... 5.20 behaved as if this were nil."
   :type 'boolean
   :group 'cperl-indentation-details)
 
diff --git a/lisp/progmodes/idlw-shell.el b/lisp/progmodes/idlw-shell.el
index 023970207dc..23f9d4af8c9 100644
--- a/lisp/progmodes/idlw-shell.el
+++ b/lisp/progmodes/idlw-shell.el
@@ -2638,7 +2638,7 @@ If ENABLE is non-nil, enable them instead."
 (defun idlwave-shell-break-in ()
   "Look for a module name near point and set a break point for it.
 The command looks for an identifier near point and sets a breakpoint
-for the first line of the corresponding module.  If MODULE is `t', set
+for the first line of the corresponding module.  If MODULE is t, set
 in the current routine."
   (interactive)
   (let* ((module (idlwave-fix-module-if-obj_new (idlwave-what-module)))
diff --git a/lisp/progmodes/idlwave.el b/lisp/progmodes/idlwave.el
index 45f080c3aab..44d84d65810 100644
--- a/lisp/progmodes/idlwave.el
+++ b/lisp/progmodes/idlwave.el
@@ -8162,7 +8162,7 @@ demand _EXTRA in the keyword list."
 			       class
 			       (idlwave-routines)) 'do-link))))))
 
-    ;; If the class is `t', combine all keywords of all methods NAME
+    ;; If the class is t, combine all keywords of all methods NAME
     (when (eq class t)
       (mapc (lambda (entry)
 	      (and
diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index 4b0a028faa3..d45d082c40a 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -3216,7 +3216,7 @@ With argument MSG show activation/deactivation message."
            (concat
             "Your `python-shell-interpreter' doesn't seem to "
             "support readline, yet `python-shell-completion-native' "
-            (format "was `t' and %S is not part of the "
+            (format "was t and %S is not part of the "
                     (file-name-nondirectory python-shell-interpreter))
             "`python-shell-completion-native-disabled-interpreters' "
             "list.  Native completions have been disabled locally. "))
diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index 0e2f66e5bc5..21ad1021c9e 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -287,7 +287,7 @@ Only has effect when `ruby-use-smie' is nil."
   :group 'ruby
   :safe 'booleanp)
 
-;; FIXME Woefully under documented.  What is the point of the last `t'?.
+;; FIXME Woefully under documented.  What is the point of the last t?.
 (defcustom ruby-deep-indent-paren '(?\( ?\[ ?\] t)
   "Deep indent lists in parenthesis when non-nil.
 The value t means continuous line.