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Better xsparse outname guessing

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* scripts/xsparse.c (guess_outname): Use simpler algorithm,
that doesn’t mishandle outnames like ‘/foo’.
This commit is contained in:
Paul Eggert
2024-08-02 11:23:23 -07:00
parent ba332e36d0
commit 44196e198f
2 changed files with 14 additions and 47 deletions
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doc/tar.texi
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@@ -11014,17 +11014,12 @@ will deduce the name for the resulting expanded file using the
following algorithm:
@enumerate 1
@item If @file{cond-file} does not contain any directories,
@file{../cond-file} will be used;
@item
If @file{cond-file} has the form @file{@var{dir}/@var{name}},
the output file name will be @file{@var{dir}/../@var{name}}.
@item If @file{cond-file} has the form
@file{@var{dir}/@var{t}/@var{name}}, where both @var{t} and @var{name}
are simple names, with no @samp{/} characters in them, the output file
name will be @file{@var{dir}/@var{name}}.
@item Otherwise, if @file{cond-file} has the form
@file{@var{dir}/@var{name}}, the output file name will be
@file{@var{name}}.
@item
Otherwise, the output file name will be @file{../cond-file}.
@end enumerate
In the unlikely case when this algorithm does not suit your needs,