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-rw-r--r--usr.bin/m4/m4.16
1 files changed, 5 insertions, 1 deletions
diff --git a/usr.bin/m4/m4.1 b/usr.bin/m4/m4.1
index 14938325fb9..957fd988dd6 100644
--- a/usr.bin/m4/m4.1
+++ b/usr.bin/m4/m4.1
@@ -1,4 +1,4 @@
-.\" @(#) $OpenBSD: m4.1,v 1.17 2000/07/06 04:06:55 aaron Exp $
+.\" @(#) $OpenBSD: m4.1,v 1.18 2000/07/24 23:08:25 espie Exp $
.\"
.\"
.Dd January 26, 1993
@@ -139,6 +139,10 @@ Prints the names and definitions for the named items, or for everything
if no arguments are passed.
.It Ic errprint
Prints the first argument on the standard error output stream.
+.It Ic esyscmd
+Pass its first argument to a shell and returns the shell's standard output.
+Note that the shell shares its standard input and standard error with
+.Nm
.It Ic eval
Computes the first argument as an arithmetic expression using 32-bit
arithmetic.