Macro hygiene: chain! and qualified paths
#943
Merged
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#942 lead me to check our macro hygiene.
coreand usesitertools::chain!then there is a conflict!I improve our macro hygiene test by adding (empty) modules with all the names we might be tempted to use.
Without changing
coreinchain!, the test failed!.mapand.zipabsolutely impossible? Seems more bulletproof to me that way.EDIT: Found Add a chain! macro. #525 (comment) which seems to indicate I'm right to use qualified paths.
PS: This is my 💯th merged PR. 🎉