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tests: work around libmagic bug in svn subrepo tests

Arun Kulshreshtha requested to merge topic/default/svn-tests-libmagic into branch/default

libmagic 5.40 introduced a bug 1 wherein ASCII text files with fewer than 3 distinct character values would be reported as binary data rather than as text. This bug was later fixed in version 5.41 2.

SVN uses libmagic to determine the MIME type of added files with missing or unknown extensions 3. This results in test failures on systems with libmagic 5.40 installed:

   $ echo a > a
   $ svn add a
-  A         a
+  A  (bin)  a

A simple workaround is to change the test file's content to include 3 distinct ASCII values (including the terminating newline).

  1. https://bugs.astron.com/view.php?id=180 ↩

  2. https://bugs.astron.com/view.php?id=261 ↩

  3. https://svnbook.red-bean.com/en/1.8/svn.advanced.props.html#idm2649 ↩

Edited by Arun Kulshreshtha

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