tar: *.tlz now implies lzip, not lzma

Suggested by Antonio Diaz Diaz in:
https://lists.gnu.org/r/bug-tar/2026-10/msg00002.html
* src/suffix.c (compression_suffixes): Change tlz from LZMA to LZIP.

NEWS

@@ -1,4 +1,4 @@
-GNU tar NEWS - User visible changes. 2026-09-30
+GNU tar NEWS - User visible changes. 2026-10-09
 Please send GNU tar bug reports to <bug-tar@gnu.org>
 
 version 1.35.90 (git)
@@ -44,6 +44,10 @@ option.
    Formerly, the behavior was undocumented and differed from one tar
    version to the next.
 
+** The *.tlz extension in a tarball now implies lzip, not lzma.
+   This matches the change made to pkgtools in Slackware 15.0 (2022),
+   after lzma was superseded by xz in 2009.
+
 ** Support for RTU-style contiguous files has been withdrawn.
    RTU’s supplier dropped support for RTU decades ago.
 

doc/tar.texi

@@ -10051,8 +10051,8 @@ suffix.  The following suffixes are recognized:
 @item @samp{.tbz2} @tab @command{bzip2}
 @item @samp{.tbz} @tab @command{bzip2}
 @item @samp{.lz} @tab @command{lzip}
+@item @samp{.tlz} @tab @command{lzip}
 @item @samp{.lzma} @tab @command{lzma}
-@item @samp{.tlz} @tab @command{lzma}
 @item @samp{.lzo} @tab @command{lzop}
 @item @samp{.xz} @tab @command{xz}
 @item @samp{.zst} @tab @command{zstd}

src/suffix.c

@@ -45,8 +45,8 @@ static struct compression_suffix const compression_suffixes[] = {
   { S(tbz2, BZIP2) },
   { S(tz2,  BZIP2) },
   { S(lz,   LZIP) },
+  { S(tlz,  LZIP) },
   { S(lzma, LZMA) },
-  { S(tlz,  LZMA) },
   { S(lzo,  LZOP) },
   { S(tzo,  LZOP) },
   { S(xz,   XZ) },