Delete references to deleted library hilit19.el

* doc/misc/gnus.texi (Compatibility):
* lisp/progmodes/f90.el:
* lisp/ps-print.el:
* lisp/vc/ediff.el: Delete references to hilit19.el.

doc/misc/gnus.texi

@@ -27021,16 +27021,6 @@ maintains a hash table that points to the entries in this alist (which
 speeds up many functions), and changing the alist directly will lead to
 peculiar results.
 
-@cindex hilit19
-@cindex highlighting
-Old hilit19 code does not work at all.  In fact, you should probably
-remove all hilit code from all Gnus hooks
-(@code{gnus-group-prepare-hook} and @code{gnus-summary-prepare-hook}).
-Gnus provides various integrated functions for highlighting.  These are
-faster and more accurate.  To make life easier for everybody, Gnus will
-by default remove all hilit calls from all hilit hooks.  Uncleanliness!
-Away!
-
 Packages like @code{expire-kill} will no longer work.  As a matter of
 fact, you should probably remove all old @sc{gnus} packages (and other
 code) when you start using Gnus.  More likely than not, Gnus already

lisp/progmodes/f90.el

@@ -116,12 +116,11 @@
 ;;    non-nil, the line numbers are never touched.
 ;; 2) Multi-; statements like "do i=1,20 ; j=j+i ; end do" are not handled
 ;;    correctly, but I imagine them to be rare.
-;; 3) Regexps for hilit19 are no longer supported.
+;; 3) For FIXED FORMAT code, use fortran mode.
-;; 4) For FIXED FORMAT code, use fortran mode.
+;; 4) Preprocessor directives, i.e., lines starting with # are left-justified
-;; 5) Preprocessor directives, i.e., lines starting with # are left-justified
 ;;    and are untouched by all case-changing commands.  There is, at present, no
 ;;    mechanism for treating multi-line directives (continued by \ ).
-;; 6) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented.
+;; 5) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented.
 ;;    You are urged to use f90-do loops (with labels if you wish).
 
 ;; List of user commands

lisp/ps-print.el

@@ -1320,11 +1320,11 @@ Please send all bug fixes and enhancements to
 ;; Known bugs and limitations of ps-print
 ;; --------------------------------------
 ;;
-;; Automatic font-attribute detection doesn't work well, especially with
+;; Automatic font-attribute detection doesn't work well.  Users having
-;; hilit19 and older versions of get-create-face.  Users having problems with
+;; problems with auto-font detection should use the lists
-;; auto-font detection should use the lists `ps-italic-faces', `ps-bold-faces'
+;; `ps-italic-faces', `ps-bold-faces' and `ps-underlined-faces' and/or
-;; and `ps-underlined-faces' and/or turn off automatic detection by setting
+;; turn off automatic detection by setting `ps-auto-font-detect' to
-;; `ps-auto-font-detect' to nil.
+;; nil.
 ;;
 ;; Still too slow; could use some hand-optimization.
 ;;

lisp/vc/ediff.el

@@ -89,12 +89,11 @@
 ;;  underlining.  However, if the region is already underlined by some other
 ;;  overlays, there is no simple way to temporarily remove that residual
 ;;  underlining.  This problem occurs when a buffer is highlighted with
-;;  hilit19.el or font-lock.el packages.  If this residual highlighting gets
+;;  font-lock.el packages.  If this residual highlighting gets in the way, you
-;;  in the way, you can do the following.  Both font-lock.el and hilit19.el
+;;  can do the following.  font-lock.el provides commands for unhighlighting
-;;  provide commands for unhighlighting buffers.  You can either place these
+;;  buffers.  You can either place these commands in `ediff-prepare-buffer-hook'
-;;  commands in `ediff-prepare-buffer-hook' (which will unhighlight every
+;;  (which will unhighlight every buffer used by Ediff) or you can execute
-;;  buffer used by Ediff) or you can execute them interactively, at any time
+;;  them interactively, at any time and in any buffer.
-;;  and on any buffer.
 
 
 ;;; Acknowledgments: