nextflow-io/nextflow

Expand `.splitCsv()` to allow comments in CSV and TSV files

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#6,705 opened on 2026年1月8日

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 (6 comments) (1 reaction) (0 assignees)Groovy (3,382 stars) (784 forks)batch import
good first issue

説明

New feature

Someone opened a feature request on nf-schema to ask to allow comments (#) in CSV and TSV files. I however think this would be an awesome upstream addition to the .splitCsv() method so everyone can benefit from that feature. Comments syntax as explained here makes the most sense I think: https://www.w3schools.io/file/csv-comments/

Use case

Easier debugging in CSV and TSV files by allowing directly commenting out lines in those files. This could also help to add some comments and explanation to those files without breaking them.

Suggested implementation

I think this should not be default behaviour of the function but adding an option like comments:true would be an ideal solution IMO

Thanks!

コントリビューターガイド

技術スタック
なし
領域
backenddata
Issue 種別
feature
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
half day
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
fresh
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
clear
前提条件
Groovy basicsNextflow DSLCSV formatUnit testing
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
70
調査方針
Investigate the current implementation of `.splitCsv()` in the Nextflow codebase, likely located in the `nextflow.script` package. The new `comments` option should be added as an optional parameter. Look at how other options are handled in similar operators for consistency. Additionally, review the linked feature request (https://github.com/nextflow io/nf schema/issues/193) for additional context on expected comment syntax.