If applying these patches to R14.0.4, the patch given in bug 2043 should be applied first.
For git, some patches have already been done.

--------------------------------------
The warning is not related to this error.
It's due to the routine in tdeutils/ark/archiveformatinfo.cpp scanning for the non-existent application/x-tbz2 - so remove it [already done in git]:

--- ark/archiveformatinfo.cpp
+++ ark/archiveformatinfo.cpp
@@ -55 +54,0 @@
-  addFormatInfo( TAR_FORMAT, "application/x-tbz2", ".tar.bz2" );

--------------------------------------
There is also an application/x-rar-compressed which adds a second <file>.rar entry to the Compress As menu.
There is no indication of the difference between that and the application/x-rar Compress As option and functions the same - so remove it:

--- ark/archiveformatinfo.cpp
+++ ark/archiveformatinfo.cpp
@@ -80 +78,0 @@
-  addFormatInfo( RAR_FORMAT, "application/x-rar-compressed", ".rar" );

also needs to be removed from tdeaddons [patch at 328 done in git ]

--- konq-plugins/arkplugin/arkplugin.cpp
+++ konq-plugins/arkplugin/arkplugin.cpp
@@ -328 +328 @@
-        m_archiveMimeTypes << "application/x-rar" << "application/x-rar-compressed";
+        m_archiveMimeTypes << "application/x-rar";
@@ -411 +411 @@
-        m_extractMimeTypes << "application/x-rar" << "application/x-rar-compressed";
+        m_extractMimeTypes << "application/x-rar";

and removed from tdelibs

--- mimetypes/application/CMakeLists.txt
+++ mimetypes/application/CMakeLists.txt
@@ -85 +84,0 @@
-    x-rar-compressed.desktop

--- mimetypes/application/Makefile.am
+++ mimetypes/application/Makefile.am
@@ -68 +67,0 @@
-	x-rar-compressed.desktop \

-----------------------------
Remove other redundant application/x-tbz2 entries in tdeutils:
[already done in git]

--- ark/tar.cpp
+++ ark/tar.cpp
@@ -94,7 +93,0 @@
-    if ( m_fileMimeType == "application/x-tbz2" )
-    {
-        // ark treats .tar.bz2 as x-tbz, instead of duplicating the mimetype
-        // let's just alias it to the one we already handle.
-        m_fileMimeType = "application/x-tbz";
-    }
-
--- superkaramba/src/sknewstuff.cpp
+++ superkaramba/src/sknewstuff.cpp
@@ -67 +66,0 @@
-      result->name() == "application/x-tbz2" ||
--- ark/ark.desktop
+++ ark/ark.desktop
@@ -2 +2 @@
-MimeType=application/x-gzip;application/x-lha;application/x-tar;application/x-tgz;application/x-tbz;application/x-tbz2;application/x-zip;application/zip;application/x-bzip;application/x-tzo;application/x-lzop;application/x-rar;application/x-zoo;application/x-tarz;application/x-archive;application/x-bzip2;application/x-jar;application/x-deb;application/x-ace;application/x-7z;application/x-arc;application/x-arj;application/x-compress;application/x-cpio;application/x-pak;application/x-zip-compressed;application/x-lzma;application/x-xz;application/x-txz;application/x-tlz
+MimeType=application/x-gzip;application/x-lha;application/x-tar;application/x-tgz;application/x-tbz;application/x-zip;application/zip;application/x-bzip;application/x-tzo;application/x-lzop;application/x-rar;application/x-zoo;application/x-tarz;application/x-archive;application/x-bzip2;application/x-jar;application/x-deb;application/x-ace;application/x-7z;application/x-arc;application/x-arj;application/x-compress;application/x-cpio;application/x-pak;application/x-zip-compressed;application/x-lzma;application/x-xz;application/x-txz;application/x-tlz
--- ark/ark_part.desktop
+++ ark/ark_part.desktop
@@ -2 +2 @@
-MimeType=application/x-gzip;application/x-lha;application/x-tar;application/x-tgz;application/x-tbz;application/x-tbz2;application/x-zip;application/x-bzip;application/x-tzo;application/x-lzop;application/x-rar;application/x-zoo;application/x-tarz;application/x-archive;application/x-bzip2;application/x-jar;application/x-deb;application/x-ace;application/x-7z;application/x-arc;application/x-arj;application/x-compress;application/x-cpio;application/x-pak;application/x-lzma;application/x-xz;application/x-tlz;application/x-txz
+MimeType=application/x-gzip;application/x-lha;application/x-tar;application/x-tgz;application/x-tbz;application/x-zip;application/x-bzip;application/x-tzo;application/x-lzop;application/x-rar;application/x-zoo;application/x-tarz;application/x-archive;application/x-bzip2;application/x-jar;application/x-deb;application/x-ace;application/x-7z;application/x-arc;application/x-arj;application/x-compress;application/x-cpio;application/x-pak;application/x-lzma;application/x-xz;application/x-tlz;application/x-txz

--------------------------------------
The rar issue requires modifying rar.cpp

The version string formats for the various rar/unrar programs are:

For rarlabs
RAR 5.50   Copyright (c) 1993-2017 Alexander Roshal   11 Aug 2017
UNRAR 5.50 freeware      Copyright (c) 1993-2017 Alexander Roshal

For unrarsrc [unrar-free ?]:
UNRAR 5.60 beta 3 freeware      Copyright (c) 1993-2018 Alexander Roshal

and the current rar.cpp regex doesn't catch them and the capture[?] chunks are displaced by one

--- ark/rar.cpp
+++ ark/rar.cpp
@@ -102 +102 @@
-    TQRegExp versionRegExp (TQString::fromLatin1 ("RAR\\s(\\d+)\\.(\\d+)\\s(beta (\\d+))?\\s+Copyright.*"));
+    TQRegExp versionRegExp (TQString::fromLatin1 ("(UN)?RAR\\s(\\d+)\\.(\\d+)( beta (\\d+))?.*"));
@@ -107,3 +107,3 @@
-      m_version  = versionRegExp.cap(1).toShort() * VERSION_MAJOR;
-      m_version += versionRegExp.cap(2).toShort()/10 * VERSION_MINOR;
-      m_version += versionRegExp.cap(2).toShort()%10 * VERSION_PATCH;
+      m_version  = versionRegExp.cap(2).toShort() * VERSION_MAJOR;
+      m_version += versionRegExp.cap(3).toShort()/10 * VERSION_MINOR;
+      m_version += versionRegExp.cap(3).toShort()%10 * VERSION_PATCH;
@@ -111 +111 @@
-      if (!versionRegExp.cap(4).isEmpty()) { // beta versions should go befor release ones
+      if (!versionRegExp.cap(5).isEmpty()) { // beta versions should go before release ones
@@ -113 +113 @@
-        m_version += versionRegExp.cap(4).toShort();
+        m_version += versionRegExp.cap(5).toShort();


Tested for (un)rar 5.5.0 and 3.9.0 and unrar[-free ?] 5.31 beta 1 and 5.60 beta 3

unrar-3.9.0 won't open files compressed with rar-5.5.0, but I would think that's expected behaviour(?)

--------------------------------------
Options

[1] default to tar.xz compression in Compress As menu

--- konq-plugins/arkplugin/arkplugin.cpp
+++ konq-plugins/arkplugin/arkplugin.cpp
@@ -96 +96 @@
-        m_ext = m_conf->readEntry( "LastExtension", ".tar.gz" );
+        m_ext = m_conf->readEntry( "LastExtension", ".tar.xz" );
@@ -107 +107 @@
-                                    "LastMimeType", "application/x-tgz" ) )->comment(),
+                                    "LastMimeType", "application/x-txz" ) )->comment(),

[2] enable jar and ar compression in Compress As menu

--- konq-plugins/arkplugin/arkplugin.cpp
+++ konq-plugins/arkplugin/arkplugin.cpp
@@ -323 +323 @@
-        if ( m_conf->readBoolEntry( "UseJar", false ) )
+        if ( m_conf->readBoolEntry( "UseJar", true ) )
@@ -346 +346 @@
-    if ( !TDEStandardDirs::findExe( "ar" ).isNull() && m_conf->readBoolEntry( "UseAr", false ) )
+    if ( !TDEStandardDirs::findExe( "ar" ).isNull() && m_conf->readBoolEntry( "UseAr", true ) )

> ark can't open rar files.

I would like to reproduce the problem and test Ray's patches.
Can any of you provide a .rar file that cannot be opened?
I have tried a few here, but they all worked so far.

Thanks a lot :-)

try the file here (not a direct link)
https://developer.blender.org/p/dfleury2/

> try the file here (not a direct link)
> https://developer.blender.org/p/dfleury2/

Thanks for the feedback. I can open and extract the file without issues from both Ark and Konqueror Ark plugin.
I am running Debian buster + rar + unrar + TDE 14.1.0~devel.

Any additional info you can provide could help.

just tested this
remove rar

> remove rar
Thanks, I am now able to reproduce the problem ;-)

The patches proposed by Ray have been pushed to git, with two exceptions:
- the rar patch has been simplified. By using non capturing groups in the regex, it is no t necessary to change the group numbers later in the code.
- the "ar" format in option 2 has remained disable by default.

In addition, x-zip-compressed duplicated entry was also removed.

Commits related to this bug.

R14.1
tdelibs:   74181268, 1b04b27b
tdeutils:  4d3ca8ff, 04a8b70f, c91feb08
tdeaddons: 256b5e18, fcdbd810, b1c38049

R14.0
tdelibs:   64ce5b22, 8140cac9
tdeutils:  f0d31187, cc71cffb, 817ad11e
tdeaddons: e7a5dff2, 9581ce33, fa22b5e8