utils

commit: 281599280ffac7e38e6b53b11f493aad214769e9
parent d7e9a65afb03a7603f49c8ca5c1ac0495a0addbf
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Fri, 11 Aug 2023 23:50:20 +0200

cmd/cat: Add -u option for POSIX compat

Diffstat:
M
cmd/cat.1
10
++++------
M
cmd/cat.c
7
+++++++

2 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/cmd/cat.1 b/cmd/cat.1
@@ -1,5 +1,5 @@
 .\" Collection of Unix tools, comparable to coreutils
-.\" Copyright 2017-2022 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
+.\" Copyright 2017-2023 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
 .\" SPDX-License-Identifier: MPL-2.0
 .Dd 2022-02-13
 .Dt CAT 1
@@ -9,6 +9,7 @@
 .Nd concatenate files
 .Sh SYNOPSIS
 .Nm
+.Op Fl u
 .Op Ar files ...
 .Sh DESCRIPTION
 .Nm
@@ -20,6 +21,8 @@ If no
 is given,
 .Nm
 reads from the standard input.
+.Sh OPTIONS
+.Fl u is ignored, present only for POSIX compatibility.
 .Sh EXIT STATUS
 .Ex -std
 .Sh STANDARDS
@@ -29,8 +32,3 @@ is mostly compliant with the
 specification.
 .Sh AUTHORS
 .An Haelwenn (lanodan) Monnier Aq Mt contact@hacktivis.me
-.Sh BUGS
-.Nm
-lacks the
-.Fl u
-option, this is mostly intended but it means a lack of unbuffered read/writes.
diff --git a/cmd/cat.c b/cmd/cat.c
@@ -73,6 +73,13 @@ main(int argc, char *argv[])
 		return concat(0, "<stdin>");
 	}
 
+	// For POSIX compatibility
+	if(strncmp(argv[1], "-u", 3) == 0)
+	{
+		argc--;
+		argv++;
+	}
+
 	for(int argi = 1; argi < argc; argi++)
 	{
 		if(strncmp(argv[argi], "-", 2) == 0)