D37726.id114226.diff
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	diff --git a/usr.bin/grep/grep.1 b/usr.bin/grep/grep.1
	--- a/usr.bin/grep/grep.1
	+++ b/usr.bin/grep/grep.1
	@@ -30,7 +30,7 @@
	.\"
	.\" @(#)grep.1 8.3 (Berkeley) 4/18/94
	.\"
	-.Dd November 10, 2021
	+.Dd December 17, 2022
	.Dt GREP 1
	.Os
	.Sh NAME
	@@ -440,6 +440,22 @@
	This includes both
	.Fl f
	and file arguments.
	+.Sh ENVIRONMENT VARIABLES
	+The following environment variables affect the execution of
	+.Nm :
	+.Bl -tag -width "GREP_OPTIONS"
	+.It Ev GREP_COLOR
	+This variable specifies the color used to highlight matched (non-empty) text.
	+.It Ev GREP_OPTIONS
	+This variable specifies default options
	+to be placed in front of any explicit options.
	+It may cause problems with portable scripts.
	+.It Ev TERM
	+This variable specifies the type name of the terminal, console or display-device
	+type to be used.
	+See
	+.Xr term 7 .
	+.El
	.Sh EXIT STATUS
	The
	.Nm grep