Commits on Nov 3, 2024

1. patch: standard exit code …

   * Patch::error() returns $ERROR
   * In Patch::print_rejects(), $ERROR is incremented if rejected pieces are found during processing
   * No other function updates $ERROR, so Patch::error() indicates if rejects are present
   * die() cals are wrapped by an END-block which sets exit code to 1; follow standard and set it to 2 [1]
   * Failure to detect a diff in the input is considered an error; call die() to indicate this
   * test1: "perl patch -x" ---> bad option, exit(2)
   * test2: "echo "BOGUS-DIFF-123" > bogus.diff && perl patch xargs bogus.diff" ---> no diff found, exit(2)
   * test3: "perl patch dirname sort.diff" ---> mismatched diff which can't be applied, exit(1)
   * test4: "perl patch a.c correct.diff" ---> diff applies with no failed parts, exit(0)
   
   1. https://pubs.opengroup.org/onlinepubs/007904975/utilities/patch.html

   

   mknos authored Nov 3, 2024
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