Fix a few mandoc issues

- no blank before trailing delimiter
- whitespace at end of input line
- sections out of conventional order
- normalizing date format
- AUTHORS section without An macro

4 files changed, 22 insertions, 16 deletions

diff --git a/usr.bin/chat/chat.8 b/usr.bin/chat/chat.8
index b130ee886fea..7a0649ceb238 100644
--- a/usr.bin/chat/chat.8
+++ b/usr.bin/chat/chat.8
@@ -291,7 +291,8 @@ The
 .Dv SAY
 strings could be used to give progress messages in sections of
 the script where you want to have 'ECHO OFF' but still let the user
-know what is happening.  An example is:
+know what is happening.
+An example is:
 .Bd -literal -offset indent
 ABORT BUSY
 ECHO OFF
diff --git a/usr.bin/du/du.1 b/usr.bin/du/du.1
index 1ec05b9cd1d7..9f325b76dc0e 100644
--- a/usr.bin/du/du.1
+++ b/usr.bin/du/du.1
@@ -63,7 +63,7 @@ Calculate block counts in
 .Ar blocksize
 byte blocks.
 This is different from the
-.Fl h, k, m,
+.Fl h , k , m ,
 .Fl Fl si
 and
 .Fl g
@@ -172,7 +172,7 @@ options override each other and the command's actions are determined
 by the last one specified.
 .Pp
 The
-.Fl h, k, m
+.Fl h , k , m
 and
 .Fl Fl si
 options all override each other; the last one specified determines
@@ -183,7 +183,7 @@ the block counts used.
 If the environment variable
 .Ev BLOCKSIZE
 is set, and the
-.Fl h, k, m
+.Fl h , k , m
 or
 .Fl Fl si
 options are not specified, the block counts will be displayed in units of
@@ -191,7 +191,7 @@ that block size.
 If
 .Ev BLOCKSIZE
 is not set, and the
-.Fl h, k, m
+.Fl h , k , m
 or
 .Fl Fl si
 options are not specified, the block counts will be displayed in 512-byte
diff --git a/usr.bin/setchannel/setchannel.1 b/usr.bin/setchannel/setchannel.1
index d0c865e04833..604b7e315541 100644
--- a/usr.bin/setchannel/setchannel.1
+++ b/usr.bin/setchannel/setchannel.1
@@ -61,8 +61,8 @@ Select svideo input.
 .It Fl t
 Select tuner.
 .It Fl g Cm geom
-Select geometry.  The first resolution is for NTSC, the second for
-PAL.
+Select geometry.
+The first resolution is for NTSC, the second for PAL.
 .Pp
   VCD:           352x240 or 352x288
   SVCD:          480x480 or 480x576
@@ -91,7 +91,8 @@ Frequency in MHz (must include decimal point).
 .Sh HISTORY
 The
 .Nm
-program first appeared in the -multimedia mailing-list in January 2004. The
+program first appeared in the -multimedia mailing-list in January 2004.
+The
 .Nm
 program first appeared in the FreeBSD Ports collection in October 2004.
 .Sh AUTHORS
diff --git a/usr.bin/tftp/tftp.1 b/usr.bin/tftp/tftp.1
index 7f413e2b1035..67f3c566d4a0 100644
--- a/usr.bin/tftp/tftp.1
+++ b/usr.bin/tftp/tftp.1
@@ -74,7 +74,8 @@ Shorthand for "mode binary"
 Sets the TFTP blksize option in TFTP Read Request or Write Request packets
 to
 .Ar [size]
-as specified in RFC 2348.  Valid values are between 8 and 65464.
+as specified in RFC 2348.
+Valid values are between 8 and 65464.
 If no blocksize is specified, then by default a blocksize of 512 bytes
 will be used.
 .Pp
@@ -82,8 +83,8 @@ will be used.
 Sets the TFTP blksize2 option in TFTP Read Request or Write Request packets
 to
 .Ar [size] .
-Values are restricted to powers of 2 between 8 and 32768.  This is a
-non-standard TFTP option.
+Values are restricted to powers of 2 between 8 and 32768.
+This is a non-standard TFTP option.
 .Pp
 .It Cm connect Ar host Op Ar port
 Set the
@@ -109,7 +110,8 @@ or
 commands.
 .Pp
 .It Cm debug Ar level
-Enable or disable debugging levels during verbose output.  The value of
+Enable or disable debugging levels during verbose output.
+The value of
 .Ar level
 can be one of
 .Cm packet , simple , options ,
@@ -156,7 +158,8 @@ The default is
 .It Cm packetdrop [arg]
 Randomly drop
 .Ar arg
-out of 100 packets during a transfer.  This is a debugging feature.
+out of 100 packets during a transfer.
+This is a debugging feature.
 .Pp
 .It Cm put Ar file Op Oo Ar host : Oc Ns Ar remotename
 .It Cm put Ar file1 file2 ... fileN Op Oo Ar host : Oc Ns Ar remote-directory
@@ -178,7 +181,8 @@ see the example under the
 command.
 .Pp
 .It Cm options Ar [arg]
-Enable or disable support for TFTP options.  The valid values of
+Enable or disable support for TFTP options.
+The valid values of
 .Ar arg
 are
 .Cm on
@@ -198,8 +202,8 @@ Set the per-packet retransmission timeout, in seconds.
 .Pp
 .It Cm rollover [arg]
 Specify the rollover option in TFTP Read Request or Write
-Request packets.  After 65535 packets have been transmitted, set the block
-counter to
+Request packets.
+After 65535 packets have been transmitted, set the block counter to
 .Ar arg .
 Valid values of
 .Ar arg