Convert more uses of looking-at to following-char

More followup to Karl Fogel's commit a84da83c1.
* lisp/dired-aux.el (dired-add-entry, dired-subdir-hidden-p):
* lisp/dired-x.el (dired-mark-unmarked-files, dired-mark-sexp):
* lisp/help-fns.el (doc-file-to-man, doc-file-to-info):
* lisp/proced.el (proced-toggle-marks):
* lisp/progmodes/f90.el (f90-indent-line):
* lisp/ses.el (ses-load):
* lisp/tar-mode.el (tar-expunge): Replace instances of looking-at with
char comparisons using following-char.

1 files changed, 2 insertions, 2 deletions

diff --git a/lisp/progmodes/f90.el b/lisp/progmodes/f90.el
index b3661bfe3f1..49e072c65bd 100644
--- a/lisp/progmodes/f90.el
+++ b/lisp/progmodes/f90.el
@@ -1880,8 +1880,8 @@ after indenting."
     ;; FIXME This means f90-calculate-indent gives different answers
     ;; for comments and preprocessor lines to this function.
     ;; Better to make f90-calculate-indent return the correct answer?
-    (cond ((looking-at "!") (setq indent (f90-comment-indent)))
-          ((looking-at "#") (setq indent 0))
+    (cond ((= (following-char) ?!) (setq indent (f90-comment-indent)))
+          ((= (following-char) ?#) (setq indent 0))
           (t
            (and f90-smart-end (looking-at "end")
                 (f90-match-end))