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Jacob Wujciak-Jens authored and GitHub committed 40571db03cc
MINOR: [R] Avoid stray output from expr when checking for 10.13 (#38303) ### Rationale for this change `expr` was printing the number of matching chars which showed up as noise in the log (which we want to avoid as much as possible to avoid any false positive checks) See https://github.com/apache/arrow/pull/38236#issuecomment-1761679457 for @ jonkeane's investigation. ### What changes are included in this PR? Replace use of expr with test. ### Are these changes tested? Crossbow Lead-authored-by: Jacob Wujciak-Jens <jacob@wujciak.de> Co-authored-by: Jonathan Keane <jkeane@gmail.com> Signed-off-by: Jonathan Keane <jkeane@gmail.com>