From: Karel Zak <kzak@redhat.com>
Date: Mon, 9 Mar 2020 10:03:30 +0000 (+0100)
Subject: rev: (man) add note about limitations
X-Git-Tag: v2.36-rc1~192
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5b9b6d2a74625002a1972d76401e20c49836c3c0;p=thirdparty%2Futil-linux.git

rev: (man) add note about limitations

Addresses: https://github.com/karelzak/util-linux/issues/972
Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/text-utils/rev.1 b/text-utils/rev.1
index e6e1f0912d..3b45bfa6a7 100644
--- a/text-utils/rev.1
+++ b/text-utils/rev.1
@@ -43,6 +43,10 @@ The
 .B rev
 utility copies the specified files to standard output, reversing the order of
 characters in every line.  If no files are specified, standard input is read.
+.PP
+This utility is a line-oriented tool and it uses in-memory allocated buffer
+for a whole wide-char line.  If the input file is huge and without line breaks
+than allocate the memory for the file may be unsuccessful.
 .SH OPTIONS
 .TP
 \fB\-V\fR, \fB\-\-version\fR