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Reject non-simple columns when writing - #644

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issue-391-reject-nonatomic-columns
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jimhester wants to merge 2 commits into
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issue-391-reject-nonatomic-columns

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Closes #391

Summary

Reject list, data-frame, and matrix columns in vroom_write() and vroom_format() before output is written.

Testing

devtools::test(filter = "vroom_write")

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jimhester marked this pull request as ready for review September 17, 2026 20:07
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jimhester force-pushed the issue-391-reject-nonatomic-columns branch from 9ab3533 to f1bfe9a Compare September 17, 2026 20:11
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jimhester marked this pull request as draft September 17, 2026 20:12
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jimhester marked this pull request as ready for review September 17, 2026 20:19

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Successfully merging this pull request may close these issues.

vroom_write() should error on list-cols, df-cols, and matrix-cols

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