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diffutils: patch and POSIX

 
 10.12 ‘patch’ and the POSIX Standard
 ====================================
 
 If you specify the ‘--posix’ option, or set the ‘POSIXLY_CORRECT’
 environment variable, ‘patch’ conforms more strictly to the POSIX
 standard, as follows:
 
    • Take the first existing file from the list (old, new, index) when
      intuiting file names from diff headers.  ⇒Multiple Patches.
 
    • Do not remove files that are removed by a diff.  ⇒Creating and
      Removing.
 
    • Do not ask whether to get files from RCS, ClearCase, or SCCS. ⇒
      Revision Control.
 
    • Require that all options precede the files in the command line.
 
    • Do not backup files, even when there is a mismatch.  ⇒
      Backups.
 

Info Catalog diffutils: patch Messages diffutils: Merging with patch diffutils: patch and Tradition