PR/48499 CVS commit: src/bin/sh

["Robert Elz" <kre%netbsd.org@localhost>]

The following reply was made to PR bin/48499; it has been noted by GNATS.

From: "Robert Elz" <kre%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/48499 CVS commit: src/bin/sh
Date: Wed, 25 Jul 2018 14:42:50 +0000

 Module Name:	src
 Committed By:	kre
 Date:		Wed Jul 25 14:42:50 UTC 2018
 
 Modified Files:
 	src/bin/sh: eval.c eval.h exec.c
 
 Log Message:
 Fix several bugs in the command / type builtin ( including PR bin/48499 )
 
 1. Make command -pv (and -pV) work (which is not as easy as the PR
    suggests it might be (the "check and cause error" was there because
    it did not work, not in order to prevent it from working).
 
 2. Stop -v and -V being both used (that makes no sense).
 
 3. Stop the "type" builtin inheriting the args (-pvV) that "command" has
    (which it did, as when -v -or -V is used with command, it and type are
     implemented using the same code).
 
 4. make "command -v word" DTRT for sh keywords (was treating them as an error).
 
 5. Require at least one arg for "command -[vV]" or "type" else usage & error.
    Strictly this should also apply to "command" and "command -p" (no -v)
    but that's handled elsewhere, so perhaps some other time.   Perhaps
    "command -v" (and -V) should be limited to 1 command name (where "type"
    can have many) as in the POSIX definitions, but I don't think that matters.
 
 6. With "command -V alias", (or "type alias" which is the same thing),
    (but not "command -v alias") alter the output format, so we get
 	ll is an alias for: ls -al
    instead of the old
 	ll is an alias for
 	ls -al
    (and note there was a space, for some reason, after "for")
 
    That is, unless the alias value contains any \n characters, in which
    case (something approximating) the old multi-line format is retained.
    Also note: that if code wants to parse/use the value of an alias, it
    should be using the output of "alias name", not command or type.
 
 Note that none of the above affects "command [-p] cmd" (no -v or -V options)
 only "command -[vV]" and "type".
 
 Note also that the changes to eval.[ch] are merely to make syspath()
 visible in exec.c rather than static in eval.c
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.155 -r1.156 src/bin/sh/eval.c
 cvs rdiff -u -r1.19 -r1.20 src/bin/sh/eval.h
 cvs rdiff -u -r1.52 -r1.53 src/bin/sh/exec.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.