Commit 9e4ffdc8cfdf4c73f4fa8c66259a5aadaee4ae88 modified the output of 'setlocalversion' to directly use its output unless empty for BR2_VERSION_FULL, /etc/os-release, and 'make print-version'. However, in the case of svn, the output from 'setlocalversion' is '-svn<commit>' which results in BR2_VERSION_FULL of '-svn<commit>' rather than the expected '2021.02-svn<commit>' which used to be the case prior to this change.
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