===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/diff/diff.1,v
retrieving revision 1.22
retrieving revision 1.23
diff -c -r1.22 -r1.23
*** src/usr.bin/diff/diff.1	2003/09/18 09:38:33	1.22
--- src/usr.bin/diff/diff.1	2004/01/07 17:19:05	1.23
***************
*** 1,4 ****
! .\" $OpenBSD: diff.1,v 1.22 2003/09/18 09:38:33 jmc Exp $
  .\"
  .\" Copyright (c) 1980, 1990, 1993
  .\"	The Regents of the University of California.  All rights reserved.
--- 1,4 ----
! .\" $OpenBSD: diff.1,v 1.23 2004/01/07 17:19:05 otto Exp $
  .\"
  .\" Copyright (c) 1980, 1990, 1993
  .\"	The Regents of the University of California.  All rights reserved.
***************
*** 37,43 ****
  .Nd differential file and directory comparator
  .Sh SYNOPSIS
  .Nm diff
! .Op Fl abdilqtTw
  .Oo
  .Fl c | Fl e | Fl f |
  .Fl n | Fl u
--- 37,43 ----
  .Nd differential file and directory comparator
  .Sh SYNOPSIS
  .Nm diff
! .Op Fl abdilpqtTw
  .Oo
  .Fl c | Fl e | Fl f |
  .Fl n | Fl u
***************
*** 45,51 ****
  .Op Fl L Ar label
  .Ar file1 file2
  .Nm diff
! .Op Fl abdilqtTw
  .Op Fl L Ar label
  .Fl C Ar number
  .Ar file1 file2
--- 45,51 ----
  .Op Fl L Ar label
  .Ar file1 file2
  .Nm diff
! .Op Fl abdilpqtTw
  .Op Fl L Ar label
  .Fl C Ar number
  .Ar file1 file2
***************
*** 54,65 ****
  .Fl D Ar string
  .Ar file1 file2
  .Nm diff
! .Op Fl abdilqtTw
  .Op Fl L Ar label
  .Fl U Ar number
  .Ar file1 file2
  .Nm diff
! .Op Fl abdilNPqtTw
  .Oo
  .Fl c | Fl e | Fl f |
  .Fl n | Fl u
--- 54,65 ----
  .Fl D Ar string
  .Ar file1 file2
  .Nm diff
! .Op Fl abdilpqtTw
  .Op Fl L Ar label
  .Fl U Ar number
  .Ar file1 file2
  .Nm diff
! .Op Fl abdilNPpqtTw
  .Oo
  .Fl c | Fl e | Fl f |
  .Fl n | Fl u
***************
*** 205,210 ****
--- 205,216 ----
  Print
  .Ar label
  instead of the first file name and time in the context or unified diff header.
+ .It Fl p
+ With unified and context diffs, show with each change
+ the first 40 characters of the last line before the context beginning
+ with a letter, an underscore or a dollar sign.
+ For C source code following standard layout conventions, this will
+ show the prototype of the function the change applies to.
  .It Fl t
  Will expand tabs in output lines.
  Normal or