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diff --git a/usr.bin/mail/extern.h b/usr.bin/mail/extern.h
--- a/usr.bin/mail/extern.h
+++ b/usr.bin/mail/extern.h
@@ -131,7 +131,6 @@
uid_t getuserid(char *);
int grabh(struct header *, int);
int group(void *);
-void hangup(int);
int hash(const char *);
void hdrstop(int);
int headers(void *);
diff --git a/usr.bin/mail/lex.c b/usr.bin/mail/lex.c
--- a/usr.bin/mail/lex.c
+++ b/usr.bin/mail/lex.c
@@ -199,8 +199,6 @@
if (!sourcing) {
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
(void)signal(SIGINT, intr);
- if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
- (void)signal(SIGHUP, hangup);
(void)signal(SIGTSTP, stop);
(void)signal(SIGTTOU, stop);
(void)signal(SIGTTIN, stop);
@@ -567,17 +565,6 @@
}
}
-/*
- * Branch here on hangup signal and simulate "exit".
- */
-void
-hangup(int s __unused)
-{
-
- /* nothing to do? */
- exit(1);
-}
-
/*
* Announce the presence of the current Mail version,
* give the message count, and print a header listing.

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