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man/os-release: add a note about repeating entries

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We didn't actually say that keys should not be repeated. At least the
examples in docs (both python and shell) would do that, and any simple
parser that builds a dictionary would most likely behave the same way.
But let's document this expectation, but also say how to deal with malformed
files.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2022-03-08 10:10:12 +01:00
parent 25407ad2a7
commit 3a84a3c9df
1 changed files with 4 additions and 0 deletions
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man/os-release.xml
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@ -75,6 +75,10 @@
from earliest boot on, and hence must be located on the root file
system.</para>
<para><filename>os-release</filename> must not contain repeating keys. Nevertheless, readers should pick
the entries later in the file in case of repeats, similarly to how a shell sourcing the file would. A
reader may warn about repeating entries.</para>
<para>For a longer rationale for <filename>os-release</filename>
please refer to the <ulink
url="http://0pointer.de/blog/projects/os-release">Announcement of <filename>/etc/os-release</filename></ulink>.</para>