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PR/42829 CVS commit: src/bin/sh

The following reply was made to PR standards/42829; it has been noted by GNATS.

From: "Robert Elz" <>
Subject: PR/42829 CVS commit: src/bin/sh
Date: Tue, 11 Dec 2018 13:31:21 +0000

 Module Name:	src
 Committed By:	kre
 Date:		Tue Dec 11 13:31:20 UTC 2018
 Modified Files:
 	src/bin/sh: main.c parser.c parser.h sh.1
 Log Message:
 PR standards/42829
 Implement parameter and arithmetic expansion of $ENV
 before using it as the name of a file from which to
 read startup commands for the shell.   This continues
 to happen for all interactive shells, and non-interactive
 shells for which the posix option is not set (-o posix).
 On any actual error, or if an attempt is made to use
 command substitution, then the value of ENV is used
 unchanged as the file name.
 The expansion complies with POSIX XCU 2.5.3, though that
 only requires parameter expansion - arithmetic expansion
 is an extension (but for us, it is much easier to do, than
 not to do, and it allows some weird stuff, if you're so
 inclined....)   Note that there is no ~ expansion (use $HOME).
 To generate a diff of this commit:
 cvs rdiff -u -r1.78 -r1.79 src/bin/sh/main.c
 cvs rdiff -u -r1.158 -r1.159 src/bin/sh/parser.c
 cvs rdiff -u -r1.26 -r1.27 src/bin/sh/parser.h
 cvs rdiff -u -r1.211 -r1.212 src/bin/sh/sh.1
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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