Adding upstream version 1.14.upstream/1.14upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

24 files changed, 98 insertions, 112 deletions

diff --git a/ChangeLog b/ChangeLog
index e3b1859..63e6a0d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,9 +1,10 @@
-2023-12-20  Antonio Diaz Diaz  <antonio@gnu.org>
+2024-01-22  Antonio Diaz Diaz  <antonio@gnu.org>
 
-	* Version 1.14-rc1 released.
+	* Version 1.14 released.
 	* New options '--empty-error' and '--marking-error'.
 	* main.c: Reformat file diagnostics as 'PROGRAM: FILE: MESSAGE'.
 	  (show_option_error): New function showing argument and option name.
+	  (main): Make -o preserve date/mode/owner if 1 input file.
 	  (open_outstream): Create missing intermediate directories.
 	* lzip.h: Rename verify_* to check_*.
 	* configure, Makefile.in: New variable 'MAKEINFO'.
@@ -81,8 +82,8 @@
 
 	* Version 1.8 released.
 	* New option '-a, --trailing-error'.
-	* main.c (decompress): Print up to 6 bytes of trailing data
-	  when '-vvvv' is specified.
+	* main.c (decompress): Print up to 6 bytes of trailing data when
+	  '-vvvv' is specified.
 	* decoder.c (LZd_verify_trailer): Remove test of final code.
 	* main.c (main): Delete '--output' file if infd is a terminal.
 	* main.c (main): Don't use stdin more than once.
@@ -172,8 +173,7 @@
 	* Translated to C from the C++ source of lzip 1.10.
 
 
-Copyright (C) 2010-2023 Antonio Diaz Diaz.
+Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
-This file is a collection of facts, and thus it is not copyrightable,
-but just in case, you have unlimited permission to copy, distribute, and
-modify it.
+This file is a collection of facts, and thus it is not copyrightable, but just
+in case, you have unlimited permission to copy, distribute, and modify it.
diff --git a/INSTALL b/INSTALL
index 007b0bc..b405598 100644
--- a/INSTALL
+++ b/INSTALL
@@ -75,7 +75,7 @@ After running 'configure', you can run 'make' and 'make install' as
 explained above.
 
 
-Copyright (C) 2010-2023 Antonio Diaz Diaz.
+Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
 This file is free documentation: you have unlimited permission to copy,
 distribute, and modify it.
diff --git a/NEWS b/NEWS
index 27003a0..83fde4d 100644
--- a/NEWS
+++ b/NEWS
@@ -11,6 +11,9 @@ File diagnostics have been reformatted as 'PROGRAM: FILE: MESSAGE'.
 Diagnostics caused by invalid arguments to command-line options now show the
 argument and the name of the option.
 
+The option '-o, --output' now preserves dates, permissions, and ownership of
+the file when (de)compressing exactly one file.
+
 The option '-o, --output' now creates missing intermediate directories when
 writing to a file.
 
diff --git a/README b/README
index a5e55d0..5905364 100644
--- a/README
+++ b/README
@@ -1,9 +1,8 @@
 Description
 
-Clzip is a C language version of lzip, fully compatible with lzip 1.4 or
-newer. As clzip is written in C, it may be easier to integrate in
-applications like package managers, embedded devices, or systems lacking a
-C++ compiler.
+Clzip is a C language version of lzip, compatible with lzip 1.4 or newer. As
+clzip is written in C, it may be easier to integrate in applications like
+package managers, embedded devices, or systems lacking a C++ compiler.
 
 Lzip is a lossless data compressor with a user interface similar to the one
 of gzip or bzip2. Lzip uses a simplified form of the 'Lempel-Ziv-Markov
@@ -131,11 +130,10 @@ been compressed. Decompressed is used to refer to data which have undergone
 the process of decompression.
 
 
-Copyright (C) 2010-2023 Antonio Diaz Diaz.
+Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
 This file is free documentation: you have unlimited permission to copy,
 distribute, and modify it.
 
-The file Makefile.in is a data file used by configure to produce the
-Makefile. It has the same copyright owner and permissions that configure
-itself.
+The file Makefile.in is a data file used by configure to produce the Makefile.
+It has the same copyright owner and permissions that configure itself.
diff --git a/carg_parser.c b/carg_parser.c
index 8882b97..edb4eb9 100644
--- a/carg_parser.c
+++ b/carg_parser.c
@@ -1,5 +1,5 @@
 /* Arg_parser - POSIX/GNU command-line argument parser. (C version)
-   Copyright (C) 2006-2023 Antonio Diaz Diaz.
+   Copyright (C) 2006-2024 Antonio Diaz Diaz.
 
    This library is free software. Redistribution and use in source and
    binary forms, with or without modification, are permitted provided
diff --git a/carg_parser.h b/carg_parser.h
index ec5d3d0..69ce271 100644
--- a/carg_parser.h
+++ b/carg_parser.h
@@ -1,5 +1,5 @@
 /* Arg_parser - POSIX/GNU command-line argument parser. (C version)
-   Copyright (C) 2006-2023 Antonio Diaz Diaz.
+   Copyright (C) 2006-2024 Antonio Diaz Diaz.
 
    This library is free software. Redistribution and use in source and
    binary forms, with or without modification, are permitted provided
diff --git a/configure b/configure
index 7d332b6..a95a89e 100755
--- a/configure
+++ b/configure
@@ -1,12 +1,12 @@
 #! /bin/sh
 # configure script for Clzip - LZMA lossless data compressor
-# Copyright (C) 2010-2023 Antonio Diaz Diaz.
+# Copyright (C) 2010-2024 Antonio Diaz Diaz.
 #
 # This configure script is free software: you have unlimited permission
 # to copy, distribute, and modify it.
 
 pkgname=clzip
-pkgversion=1.14-rc1
+pkgversion=1.14
 progname=clzip
 srctrigger=doc/${pkgname}.texi
 
@@ -171,7 +171,7 @@ echo "MAKEINFO = ${MAKEINFO}"
 rm -f Makefile
 cat > Makefile << EOF
 # Makefile for Clzip - LZMA lossless data compressor
-# Copyright (C) 2010-2023 Antonio Diaz Diaz.
+# Copyright (C) 2010-2024 Antonio Diaz Diaz.
 # This file was generated automatically by configure. Don't edit.
 #
 # This Makefile is free software: you have unlimited permission
diff --git a/decoder.c b/decoder.c
index 0217fc6..baea067 100644
--- a/decoder.c
+++ b/decoder.c
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/decoder.h b/decoder.h
index 3b52eee..d160135 100644
--- a/decoder.h
+++ b/decoder.h
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/doc/clzip.1 b/doc/clzip.1
index f801503..46f69e9 100644
--- a/doc/clzip.1
+++ b/doc/clzip.1
@@ -1,15 +1,14 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.49.2.
-.TH CLZIP "1" "December 2023" "clzip 1.14-rc1" "User Commands"
+.TH CLZIP "1" "January 2024" "clzip 1.14" "User Commands"
 .SH NAME
 clzip \- reduces the size of files
 .SH SYNOPSIS
 .B clzip
 [\fI\,options\/\fR] [\fI\,files\/\fR]
 .SH DESCRIPTION
-Clzip is a C language version of lzip, fully compatible with lzip 1.4 or
-newer. As clzip is written in C, it may be easier to integrate in
-applications like package managers, embedded devices, or systems lacking a
-C++ compiler.
+Clzip is a C language version of lzip, compatible with lzip 1.4 or newer. As
+clzip is written in C, it may be easier to integrate in applications like
+package managers, embedded devices, or systems lacking a C++ compiler.
 .PP
 Lzip is a lossless data compressor with a user interface similar to the one
 of gzip or bzip2. Lzip uses a simplified form of the 'Lempel\-Ziv\-Markov
@@ -123,7 +122,7 @@ Report bugs to lzip\-bug@nongnu.org
 .br
 Clzip home page: http://www.nongnu.org/lzip/clzip.html
 .SH COPYRIGHT
-Copyright \(co 2023 Antonio Diaz Diaz.
+Copyright \(co 2024 Antonio Diaz Diaz.
 License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
 .br
 This is free software: you are free to change and redistribute it.
diff --git a/doc/clzip.info b/doc/clzip.info
index 8556191..2d83e3c 100644
--- a/doc/clzip.info
+++ b/doc/clzip.info
@@ -11,7 +11,7 @@ File: clzip.info,  Node: Top,  Next: Introduction,  Up: (dir)
 Clzip Manual
 ************
 
-This manual is for Clzip (version 1.14-rc1, 20 December 2023).
+This manual is for Clzip (version 1.14, 22 January 2024).
 
 * Menu:
 
@@ -29,7 +29,7 @@ This manual is for Clzip (version 1.14-rc1, 20 December 2023).
 * Concept index::          Index of concepts
 
 
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This manual is free documentation: you have unlimited permission to copy,
 distribute, and modify it.
@@ -40,10 +40,9 @@ File: clzip.info,  Node: Introduction,  Next: Output,  Prev: Top,  Up: Top
 1 Introduction
 **************
 
-Clzip is a C language version of lzip, fully compatible with lzip 1.4 or
-newer. As clzip is written in C, it may be easier to integrate in
-applications like package managers, embedded devices, or systems lacking a
-C++ compiler.
+Clzip is a C language version of lzip, compatible with lzip 1.4 or newer.
+As clzip is written in C, it may be easier to integrate in applications like
+package managers, embedded devices, or systems lacking a C++ compiler.
 
    Lzip is a lossless data compressor with a user interface similar to the
 one of gzip or bzip2. Lzip uses a simplified form of the 'Lempel-Ziv-Markov
@@ -464,14 +463,9 @@ method is far more difficult.
    Lzip has been designed, written, and tested with great care to replace
 gzip and bzip2 as the standard general-purpose compressed format for
 Unix-like systems. This chapter describes the lessons learned from these
-previous formats, and their application to the design of lzip.
-
-   Lzip is developed by volunteers who lack the resources required for
-extensive testing in all circumstances. It is up to you to test lzip before
-using it in mission-critical applications. However, a compressor like lzip
-is not a toy, and maintaining it is not a hobby. Many people's data depend
-on it. Therefore the lzip file format has been reviewed carefully and is
-believed to be free from negligent design errors.
+previous formats, and their application to the design of lzip. The lzip
+format specification has been reviewed carefully and is believed to be free
+from design errors.
 
 
 4.1 Format design
@@ -1016,8 +1010,7 @@ decoded) and 'code' (representing the current point within 'range').
 'range' is initialized to 2^32 - 1, and 'code' is initialized to 0.
 
    The range encoder produces a first 0 byte that must be ignored by the
-range decoder. This is done by shifting 5 bytes in the initialization of
-'code' instead of 4. (See the 'Range_decoder' constructor in the source).
+range decoder. (See the 'Range_decoder' constructor in the source).
 
 
 7.4 Decoding and checking the LZMA stream
@@ -1197,7 +1190,7 @@ Appendix A Reference source code
 ********************************
 
 /* Lzd - Educational decompressor for the lzip format
-   Copyright (C) 2013-2023 Antonio Diaz Diaz.
+   Copyright (C) 2013-2024 Antonio Diaz Diaz.
 
    This program is free software. Redistribution and use in source and
    binary forms, with or without modification, are permitted provided
@@ -1368,9 +1361,9 @@ public:
     return symbol;
     }
 
-  unsigned decode_bit( Bit_model & bm )
+  bool decode_bit( Bit_model & bm )
     {
-    unsigned symbol;
+    bool symbol;
     const uint32_t bound = ( range >> bit_model_total_bits ) * bm.probability;
     if( code < bound )
       {
@@ -1416,8 +1409,8 @@ public:
     unsigned symbol = 1;
     for( int i = 7; i >= 0; --i )
       {
-      const unsigned match_bit = ( match_byte >> i ) & 1;
-      const unsigned bit = decode_bit( bm[symbol+(match_bit<<8)+0x100] );
+      const bool match_bit = ( match_byte >> i ) & 1;
+      const bool bit = decode_bit( bm[symbol+(match_bit<<8)+0x100] );
       symbol = ( symbol << 1 ) | bit;
       if( match_bit != bit )
         {
@@ -1621,7 +1614,7 @@ int main( const int argc, const char * const argv[] )
       "See the lzip manual for an explanation of the code.\n"
       "\nUsage: %s [-d] < file.lz > file\n"
       "Lzd decompresses from standard input to standard output.\n"
-      "\nCopyright (C) 2023 Antonio Diaz Diaz.\n"
+      "\nCopyright (C) 2024 Antonio Diaz Diaz.\n"
       "License 2-clause BSD.\n"
       "This is free software: you are free to change and redistribute it.\n"
       "There is NO WARRANTY, to the extent permitted by law.\n"
@@ -1714,22 +1707,22 @@ Concept index
 
 Tag Table:
 Node: Top205
-Node: Introduction1212
-Node: Output7342
-Node: Invoking clzip8945
-Ref: --trailing-error9823
-Node: Quality assurance19929
-Node: Algorithm29060
-Node: File format32468
-Ref: coded-dict-size33898
-Node: Stream format35129
-Ref: what-is-coded37525
-Node: Trailing data46478
-Node: Examples48816
-Ref: concat-example50266
-Node: Problems51496
-Node: Reference source code52032
-Node: Concept index67094
+Node: Introduction1207
+Node: Output7331
+Node: Invoking clzip8934
+Ref: --trailing-error9812
+Node: Quality assurance19918
+Node: Algorithm28733
+Node: File format32141
+Ref: coded-dict-size33571
+Node: Stream format34802
+Ref: what-is-coded37198
+Node: Trailing data46072
+Node: Examples48410
+Ref: concat-example49860
+Node: Problems51090
+Node: Reference source code51626
+Node: Concept index66672
 
 End Tag Table
 
diff --git a/doc/clzip.texi b/doc/clzip.texi
index 633526b..c98e026 100644
--- a/doc/clzip.texi
+++ b/doc/clzip.texi
@@ -6,8 +6,8 @@
 @finalout
 @c %**end of header
 
-@set UPDATED 20 December 2023
-@set VERSION 1.14-rc1
+@set UPDATED 22 January 2024
+@set VERSION 1.14
 
 @dircategory Compression
 @direntry
@@ -51,7 +51,7 @@ This manual is for Clzip (version @value{VERSION}, @value{UPDATED}).
 @end menu
 
 @sp 1
-Copyright @copyright{} 2010-2023 Antonio Diaz Diaz.
+Copyright @copyright{} 2010-2024 Antonio Diaz Diaz.
 
 This manual is free documentation: you have unlimited permission to copy,
 distribute, and modify it.
@@ -63,10 +63,9 @@ distribute, and modify it.
 @cindex introduction
 
 @uref{http://www.nongnu.org/lzip/clzip.html,,Clzip}
-is a C language version of lzip, fully compatible with @w{lzip 1.4} or
-newer. As clzip is written in C, it may be easier to integrate in
-applications like package managers, embedded devices, or systems lacking a
-C++ compiler.
+is a C language version of lzip, compatible with @w{lzip 1.4} or newer.
+As clzip is written in C, it may be easier to integrate in applications like
+package managers, embedded devices, or systems lacking a C++ compiler.
 
 @uref{http://www.nongnu.org/lzip/lzip.html,,Lzip}
 is a lossless data compressor with a user interface similar to the one
@@ -516,14 +515,9 @@ method is far more difficult.@*
 Lzip has been designed, written, and tested with great care to replace gzip
 and bzip2 as the standard general-purpose compressed format for Unix-like
 systems. This chapter describes the lessons learned from these previous
-formats, and their application to the design of lzip.
-
-Lzip is developed by volunteers who lack the resources required for
-extensive testing in all circumstances. It is up to you to test lzip before
-using it in mission-critical applications. However, a compressor like lzip
-is not a toy, and maintaining it is not a hobby. Many people's data depend
-on it. Therefore the lzip file format has been reviewed carefully and is
-believed to be free from negligent design errors.
+formats, and their application to the design of lzip. The lzip format
+specification has been reviewed carefully and is believed to be free from
+design errors.
 
 @sp 1
 @section Format design
@@ -1092,9 +1086,7 @@ not yet decoded) and @samp{code} (representing the current point within
 @samp{code} is initialized to 0.
 
 The range encoder produces a first 0 byte that must be ignored by the
-range decoder. This is done by shifting 5 bytes in the initialization of
-@samp{code} instead of 4. (See the @samp{Range_decoder} constructor in
-the source).
+range decoder. (See the @samp{Range_decoder} constructor in the source).
 
 @sp 1
 @section Decoding and checking the LZMA stream
@@ -1315,7 +1307,7 @@ find by running @w{@samp{clzip --version}}.
 
 @verbatim
 /* Lzd - Educational decompressor for the lzip format
-   Copyright (C) 2013-2023 Antonio Diaz Diaz.
+   Copyright (C) 2013-2024 Antonio Diaz Diaz.
 
    This program is free software. Redistribution and use in source and
    binary forms, with or without modification, are permitted provided
@@ -1486,9 +1478,9 @@ public:
     return symbol;
     }
 
-  unsigned decode_bit( Bit_model & bm )
+  bool decode_bit( Bit_model & bm )
     {
-    unsigned symbol;
+    bool symbol;
     const uint32_t bound = ( range >> bit_model_total_bits ) * bm.probability;
     if( code < bound )
       {
@@ -1534,8 +1526,8 @@ public:
     unsigned symbol = 1;
     for( int i = 7; i >= 0; --i )
       {
-      const unsigned match_bit = ( match_byte >> i ) & 1;
-      const unsigned bit = decode_bit( bm[symbol+(match_bit<<8)+0x100] );
+      const bool match_bit = ( match_byte >> i ) & 1;
+      const bool bit = decode_bit( bm[symbol+(match_bit<<8)+0x100] );
       symbol = ( symbol << 1 ) | bit;
       if( match_bit != bit )
         {
@@ -1739,7 +1731,7 @@ int main( const int argc, const char * const argv[] )
       "See the lzip manual for an explanation of the code.\n"
       "\nUsage: %s [-d] < file.lz > file\n"
       "Lzd decompresses from standard input to standard output.\n"
-      "\nCopyright (C) 2023 Antonio Diaz Diaz.\n"
+      "\nCopyright (C) 2024 Antonio Diaz Diaz.\n"
       "License 2-clause BSD.\n"
       "This is free software: you are free to change and redistribute it.\n"
       "There is NO WARRANTY, to the extent permitted by law.\n"
diff --git a/encoder.c b/encoder.c
index a1fd214..1e2bd64 100644
--- a/encoder.c
+++ b/encoder.c
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/encoder.h b/encoder.h
index f30a8b6..be36341 100644
--- a/encoder.h
+++ b/encoder.h
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/encoder_base.c b/encoder_base.c
index d0d53e2..5f40f9b 100644
--- a/encoder_base.c
+++ b/encoder_base.c
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/encoder_base.h b/encoder_base.h
index 49ed200..c947904 100644
--- a/encoder_base.h
+++ b/encoder_base.h
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/fast_encoder.c b/fast_encoder.c
index 518a514..bab87ca 100644
--- a/fast_encoder.c
+++ b/fast_encoder.c
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/fast_encoder.h b/fast_encoder.h
index 9e9d010..e4e4000 100644
--- a/fast_encoder.h
+++ b/fast_encoder.h
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/list.c b/list.c
index a1bb638..22fea92 100644
--- a/list.c
+++ b/list.c
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lzip.h b/lzip.h
index fa8caf3..abf1a27 100644
--- a/lzip.h
+++ b/lzip.h
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lzip_index.c b/lzip_index.c
index 6f64205..b7d594c 100644
--- a/lzip_index.c
+++ b/lzip_index.c
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lzip_index.h b/lzip_index.h
index 5e2f77f..e273eaf 100644
--- a/lzip_index.h
+++ b/lzip_index.h
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/main.c b/main.c
index e5a8dd5..788699f 100644
--- a/main.c
+++ b/main.c
@@ -1,5 +1,5 @@
 /* Clzip - LZMA lossless data compressor
-   Copyright (C) 2010-2023 Antonio Diaz Diaz.
+   Copyright (C) 2010-2024 Antonio Diaz Diaz.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -80,7 +80,7 @@
 int verbosity = 0;
 
 static const char * const program_name = "clzip";
-static const char * const program_year = "2023";
+static const char * const program_year = "2024";
 static const char * invocation_name = "clzip";		/* default value */
 
 static const struct { const char * from; const char * to; } known_extensions[] = {
@@ -105,10 +105,9 @@ static bool delete_output_on_interrupt = false;
 
 static void show_help( void )
   {
-  printf( "Clzip is a C language version of lzip, fully compatible with lzip 1.4 or\n"
-          "newer. As clzip is written in C, it may be easier to integrate in\n"
-          "applications like package managers, embedded devices, or systems lacking a\n"
-          "C++ compiler.\n"
+  printf( "Clzip is a C language version of lzip, compatible with lzip 1.4 or newer. As\n"
+          "clzip is written in C, it may be easier to integrate in applications like\n"
+          "package managers, embedded devices, or systems lacking a C++ compiler.\n"
           "\nLzip is a lossless data compressor with a user interface similar to the one\n"
           "of gzip or bzip2. Lzip uses a simplified form of the 'Lempel-Ziv-Markov\n"
           "chain-Algorithm' (LZMA) stream format to maximize interoperability. The\n"
@@ -621,7 +620,7 @@ static void close_and_set_permissions( const struct stat * const in_statsp )
   if( in_statsp )
     {
     const mode_t mode = in_statsp->st_mode;
-    /* fchown will in many cases return with EPERM, which can be safely ignored. */
+    /* fchown in many cases returns with EPERM, which can be safely ignored. */
     if( fchown( outfd, in_statsp->st_uid, in_statsp->st_gid ) == 0 )
       { if( fchmod( outfd, mode ) != 0 ) warning = true; }
     else
@@ -1134,11 +1133,11 @@ int main( const int argc, const char * const argv[] )
   int retval = 0;
   const bool one_to_one = !to_stdout && program_mode != m_test && !to_file;
   bool stdin_used = false;
+  struct stat in_stats;
   for( i = 0; i < num_filenames; ++i )
     {
     const char * input_filename = "";
     int infd;
-    struct stat in_stats;
 
     Pp_set_name( &pp, filenames[i] );
     if( strcmp( filenames[i], "-" ) == 0 )
@@ -1205,7 +1204,9 @@ int main( const int argc, const char * const argv[] )
         ( program_mode != m_compress || volume_size == 0 ) )
       remove( input_filename );
     }
-  if( delete_output_on_interrupt ) close_and_set_permissions( 0 );	/* -o */
+  if( delete_output_on_interrupt )					/* -o */
+    close_and_set_permissions( ( retval == 0 && !stdin_used &&
+      filenames_given && num_filenames == 1 ) ? &in_stats : 0 );
   else if( outfd >= 0 && close( outfd ) != 0 )				/* -c */
     {
     show_error( "Error closing stdout", errno, false );
diff --git a/testsuite/check.sh b/testsuite/check.sh
index f880280..100deae 100755
--- a/testsuite/check.sh
+++ b/testsuite/check.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # check script for Clzip - LZMA lossless data compressor
-# Copyright (C) 2010-2023 Antonio Diaz Diaz.
+# Copyright (C) 2010-2024 Antonio Diaz Diaz.
 #
 # This script is free software: you have unlimited permission
 # to copy, distribute, and modify it.