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Full Discussion: nawk is truncating output
Top Forums Shell Programming and Scripting nawk is truncating output Post 302714973 by alister on Saturday 13th of October 2012 10:53:52 AM
Old 10-13-2012
Quote:
Originally Posted by Don Cragun
You should also note that the value of SUBSEP varies in different implementations of awk (and I don't remember what value nawk uses). Some systems (for example OS X) default SUBSEP to an empty string.
That's incorrect. From opensource.apple.com :: awk-18 :: tran.c (OS X 10.8.2):
Code:
char	**SUBSEP;	/* subscript separator for a[i,j,k]; default \034 */
...
SUBSEP = &setsymtab("SUBSEP", "\034", 0.0, STR|DONTFREE, symtab)->sval;

That code is also present in opensource.apple.com :: awk-1.2 :: tran.c (10.0), so it's not a recent change.

Any implementor who chooses an empty string for the value of SUBSEP should be shunned by the AWK community Smilie. Seriously, though, the chance for collisions would be too great.

OS X's awk is nawk (which is also used by the BSD systems). "\034" is also the value of SUBSEP in the mawk, GNU awk, and busybox awk implementations.

In light of this, fiddling with SUBSEP is usually unnecessary.

Regards,
Alister

Last edited by alister; 10-13-2012 at 12:02 PM..
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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWgawk | +--------------------+-----------------+ |Interface Stability | Volatile | +--------------------+-----------------+ NOTES
Source for gawk is available on http://opensolaris.org. Free Software Foundation Nov 3 1999 IGAWK(1)
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