From: John Darrington Date: Fri, 17 May 2013 08:08:49 +0000 (+0200) Subject: Documentation: Explain more emphatically that UPDATE/MATCH/ADD do not mutate input... X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d3f76190a79fd8315685ab52b779615d7b93571;p=pspp Documentation: Explain more emphatically that UPDATE/MATCH/ADD do not mutate input files. Closes bug #38682. --- diff --git a/doc/combining.texi b/doc/combining.texi index ee2934a2b2..a7bca10f5b 100644 --- a/doc/combining.texi +++ b/doc/combining.texi @@ -58,9 +58,11 @@ This section describes the syntactical features in common among the @cmd{ADD FILES}, @cmd{MATCH FILES}, and @cmd{UPDATE} commands. The following sections describe details specific to each command. -Each of these commands reads two or more input files and combines -them. The command's output becomes the new active dataset. The input -files are not changed on disk. +Each of these commands reads two or more input files and combines them. +The command's output becomes the new active dataset. +None of the commands actually change the input files. +Therefore, if you want the changes to become permanant, you must explictly +save them using an appropriate procedure or transformation (@pxref{System and Portable File IO}). The syntax of each command begins with a specification of the files to be read as input. For each input file, specify FILE with a system