[bbuchsbaum]

bids_project() splits participant metadata on arbitrary whitespace, so valid values such as homo sapiens can cause “more columns than column names”. Specify sep = "\t" in the participant reader to preserve spaces within TSV fields.

Adds an integration regression test that opens a minimal dataset with multiword species and group values and verifies the exact metadata, participant ID, column names, row count, and numeric age.

Validation: reviewed the change against the current reader and existing test fixture. R/Rscript is not installed in the editing environment, so the test suite and R CMD check have not been run locally; this draft awaits GitHub CI validation.

Fixes #84.

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Note

Low Risk
Single-line parsing change in participant metadata loading with a targeted regression test; no auth or security impact.

Overview
Fixes bids_project() failing on valid participants.tsv rows when metadata values contain spaces (e.g. homo sapiens, healthy control). The loader now passes sep = "\t" to read.table() in .bidser_load_participants_df, so columns split only on tabs instead of arbitrary whitespace.

Adds a regression test that overwrites participants.tsv with multi-word species / group fields and checks part_df column names, string values, row count, and numeric age.

Addresses #84.

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