bin/49872: sed functions 'i' and 'a' discard leading white space

[yorickhardy%gmail.com@localhost]

>Number:         49872
>Category:       bin
>Synopsis:       sed functions 'i' and 'a' discard leading white space
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun May 03 09:30:00 +0000 2015
>Originator:     Yorick Hardy
>Release:        NetBSD 7.0_BETA
>Organization:
>Environment:
NetBSD HOME 7.0_BETA NetBSD 7.0_BETA (YORICK.amd64) #0: Fri Apr 24 06:20:00 SAST 2015  root@HOME:/root/build.amd64.local7/obj/sys/arch/amd64/compile/YORICK.amd64 amd64
>Description:
sed functions 'a' and 'i' discard leading white space of the inserted/appended line(s) of text.

If I recall correctly, this was not true in previous releases of NetBSD.

>How-To-Repeat:
Script started on Sun May  3 11:19:58 2015
$ cat << "EOF" > test.sed
> a\
>   test 1  
> i\
>   test 2  
> EOF
$ vis -l < test.sed
a\134\$
  test 1  \$
i\134\$
  test 2  \$
$ echo | sed -f test.sed | vis -l
test 2  \$
\$
test 1  \$
$ D ^D
Script done on Sun May  3 11:20:33 2015

>Fix: