Cleanup mail(1)'s varying styles by converting to using style(9).

Also take a stab at cleaning up BDECFLAGS and convert all uses of
NOSTR, NIL, NONE, NOVAR, NOGRP, NOGE to NULL. Also kill 'register' to
get diffs somewhat closer to OpenBSD/NetBSD.

There are no functional changes however.
Reviewed by:	nra (visual inspection)

1 files changed, 20 insertions, 20 deletions

diff --git a/usr.bin/mail/extern.h b/usr.bin/mail/extern.h
index 62de161..cbd622c 100644
--- a/usr.bin/mail/extern.h
+++ b/usr.bin/mail/extern.h
@@ -45,22 +45,22 @@ struct name *outof __P((struct name *, FILE *, struct header *));
 struct name *put __P((struct name *, struct name *));
 struct name *tailof __P((struct name *));
 struct name *usermap __P((struct name *));
-FILE	*Fdopen __P((int, char *));
-FILE	*Fopen __P((char *, char *));
-FILE	*Popen __P((char *, char *));
+FILE	*Fdopen __P((int, const char *));
+FILE	*Fopen __P((const char *, const char *));
+FILE	*Popen __P((char *, const char *));
 FILE	*collect __P((struct header *, int));
 char	*copyin __P((char *, char **));
 char	*detract __P((struct name *, int));
 char	*expand __P((char *));
 char	*getdeadletter __P((void));
 char	*getname __P((int));
-char	*hfield __P((char [], struct message *));
+char	*hfield __P((const char *, struct message *));
 FILE	*infix __P((struct header *, FILE *));
-char	*ishfield __P((char [], char[], char *));
+char	*ishfield __P((char [], char *, const char *));
 char	*name1 __P((struct message *, int));
 char	*nameof __P((struct message *, int));
 char	*nextword __P((char *, char *));
-char	*readtty __P((char [], char []));
+char	*readtty __P((const char *, char []));
 char 	*reedit __P((char *));
 FILE	*run_editor __P((FILE *, off_t, int, int));
 char	*salloc __P((int));
@@ -70,8 +70,8 @@ char	*skin __P((char *));
 char	*skip_comment __P((char *));
 char	*snarf __P((char [], int *));
 char	*username __P((void));
-char	*value __P((char []));
-char	*vcopy __P((char []));
+char	*value __P((const char *));
+char	*vcopy __P((const char *));
 char	*yankword __P((char *, char []));
 int	 Fclose __P((FILE *));
 int	 More __P((int *));
@@ -85,7 +85,7 @@ int	 alternates __P((char **));
 void	 announce __P((void));
 int	 append __P((struct message *, FILE *));
 int	 argcount __P((char **));
-void	 assign __P((char [], char []));
+void	 assign __P((const char *, const char *));
 int	 bangexp __P((char *, size_t));
 void	 brokpipe __P((int));
 int	 charcount __P((char *, int));
@@ -116,14 +116,14 @@ int	 endifcmd __P((void));
 int	 evalcol __P((int));
 int	 execute __P((char [], int));
 int	 exwrite __P((char [], FILE *, int));
-void	 fail __P((char [], char []));
+void	 fail __P((const char *, const char *));
 int	 file __P((char **));
 struct grouphead *
 	 findgroup __P((char []));
 void	 findmail __P((char *, char *, int));
 int	 first __P((int, int));
 void	 fixhead __P((struct header *, struct name *));
-void	 fmt __P((char *, struct name *, FILE *, int));
+void	 fmt __P((const char *, struct name *, FILE *, int));
 int	 folders __P((void));
 int	 forward __P((char [], FILE *, char *, int));
 void	 free_child __P((int));
@@ -137,7 +137,7 @@ int	 getuserid __P((char []));
 int	 grabh __P((struct header *, int));
 int	 group __P((char **));
 void	 hangup __P((int));
-int	 hash __P((char *));
+int	 hash __P((const char *));
 void	 hdrstop __P((int));
 int	 headers __P((int *));
 int	 help __P((void));
@@ -145,21 +145,21 @@ void	 holdsigs __P((void));
 int	 ifcmd __P((char **));
 int	 igcomp __P((const void *, const void *));
 int	 igfield __P((char *[]));
-int	 ignore1 __P((char *[], struct ignoretab *, char *));
-int	 igshow __P((struct ignoretab *, char *));
+int	 ignore1 __P((char *[], struct ignoretab *, const char *));
+int	 igshow __P((struct ignoretab *, const char *));
 void	 intr __P((int));
 int	 isdate __P((char []));
 int	 isdir __P((char []));
 int	 isfileaddr __P((char *));
 int	 ishead __P((char []));
-int	 isign __P((char *, struct ignoretab []));
-int	 isprefix __P((char *, char *));
-void	 istrncpy __P((char *, char *, size_t));
-struct cmd *
+int	 isign __P((const char *, struct ignoretab []));
+int	 isprefix __P((const char *, const char *));
+void	 istrncpy __P((char *, const char *, size_t));
+__const struct cmd *
 	 lex __P((char []));
 void	 load __P((char *));
 struct var *
-	 lookup __P((char []));
+	 lookup __P((const char *));
 int	 mail __P((struct name *,
 	    struct name *, struct name *, struct name *, char *, char *));
 void	 mail1 __P((struct header *, int));
@@ -201,7 +201,7 @@ int	 rexit __P((int));
 int	 rm __P((char *));
 int	 run_command __P((char *, int, int, int, char *, char *, char *));
 int	 save __P((char []));
-int	 save1 __P((char [], int, char *, struct ignoretab *));
+int	 save1 __P((char [], int, const char *, struct ignoretab *));
 void	 savedeadletter __P((FILE *));
 int	 saveigfield __P((char *[]));
 int	 savemail __P((char [], FILE *));