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minex: Automatically Reduce Failing R Scripts to a Minimal Reproducible Example

Description

Shrinks a failing R script to the smallest subset of statements that still triggers the same error, using the delta debugging algorithm of Zeller and Hildebrandt (2002) \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1109/32.988498")}. Each candidate reduction is evaluated in a separate R process, so dependencies between statements and their side effects are respected. The result is a one-minimal example, in which removing any remaining statement makes the error disappear; this is the form most useful for bug reports and for questions on community forums. When no statement can be removed, because the failure is nested inside a function body, reduction continues within the surviving statements. A general delta debugging routine and a helper for reducing data frames to the rows that reproduce a failure are also provided.

Author(s)

Maintainer: Sumanth Chandrupatla [e-mail] (ORCID) [copyright holder]

Authors:

• Sumanth Chandrupatla [e-mail] (ORCID) [copyright holder]

• Sandeep Bodduluri [e-mail] (ORCID) [copyright holder]

See Also

Useful links:

• https://github.com/DIGlabUAB/minex

• Report bugs at https://github.com/DIGlabUAB/minex/issues

minex documentation built on Aug. 30, 2026, 1:07 a.m.