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Strange leading newlines when logging build progress #2418

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istathar opened this issue Jul 28, 2016 · 2 comments
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Strange leading newlines when logging build progress #2418

istathar opened this issue Jul 28, 2016 · 2 comments
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@istathar
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@istathar istathar commented Jul 28, 2016

For some reason, every time a configure step is logged, [13 spaces (?) and a] newline is preceding it. Was that on purpose?

...

quickcheck-io-0.1.3: configure
quickcheck-io-0.1.3: build
quickcheck-io-0.1.3: copy/register

hspec-core-2.2.3: configure
hspec-core-2.2.3: build
zlib-0.6.1.1: copy/register

zlib-bindings-0.1.1.5: configure
zlib-bindings-0.1.1.5: build
zlib-bindings-0.1.1.5: copy/register
hspec-core-2.2.3: copy/register

hspec-2.2.3: configure
hspec-2.2.3: build
hspec-2.2.3: copy/register
...

Not a problem, of course, just a surprise.

@istathar
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@istathar istathar commented Aug 5, 2016

Employed git bisect and determined breaking change introduced in 6af46db.

istathar referenced this issue Aug 5, 2016
* Stop trying to reset permissions on pax header entries.
* Add changelog entry.
* Output warnings for unexpected entries.
* Add testcases.

The interface of untar is designed for unit testing.
@istathar
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@istathar istathar commented Aug 5, 2016

Referenced line has a

 $logWarn $ mconcat $ map (\(path, entryType) -> "Unexpected entry type " <> ...

thing going on. I'm guessing the result of there not being an "unexpected" condition is $logWarn being called with an empty string, resulting in our spurious newlines.

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