Re: bash 4 parse error on here-document in $()

2009-09-24 Thread Chet Ramey
 Machine Type: i386-redhat-linux-gnu
 
 Bash Version: 4.0
 Patch Level: 23
 Release Status: release
 
 Description:
   Bash 4.0 errors on a here-document enclosed in $(). For example:
   x=$(cat EOF
   foo
   bar
   EOF)
   Ctrl+D
   -bash: unexpected EOF while looking for matching `)'
   -bash: syntax error: unexpected end of file

The shell is allowed to do this.  A here-document is supposed to be
terminated by a line containing the delimiter followed by a newline,
not EOF.

However, the behavior is useful enough that I changed the parser to
support it in bash-4.1.

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRUc...@case.eduhttp://cnswww.cns.cwru.edu/~chet/




Re: bash 4 parse error on here-document in $()

2009-09-24 Thread Martin Sebor

Thank you for setting me straight! I had checked the POSIX spec
before sending the report but missed the part about the delimiter
having to be immediately followed by newline.

Martin

On 09/24/2009 06:39 AM, Chet Ramey wrote:

Machine Type: i386-redhat-linux-gnu

Bash Version: 4.0
Patch Level: 23
Release Status: release

Description:
Bash 4.0 errors on a here-document enclosed in $(). For example:
x=$(catEOF
foo
bar
EOF)
Ctrl+D
-bash: unexpected EOF while looking for matching `)'
-bash: syntax error: unexpected end of file


The shell is allowed to do this.  A here-document is supposed to be
terminated by a line containing the delimiter followed by a newline,
not EOF.

However, the behavior is useful enough that I changed the parser to
support it in bash-4.1.

Chet