[ast-developers] Copying or moving .sh.match via typeset -m or typeset -c doesn't work

[Irek Szczesniak]

ast-ksh 20130524 prints nothing if we attempt to either move or copy
the contents of .sh.match.

Examples:
ksh -c 'function f2 { nameref mar=$1 ; typeset dummy x="-1a2b3c4d9u" ;
dummy="${x//~(E)([[:digit:]])|([[:alpha:]])/D}" ; typeset -m
"mar=.sh.match" ; } ; function f1 { typeset -a matchar ; f2 matchar ;
print -v matchxar ; } ; f1; :

ksh -c 'function f2 { nameref mar=$1 ; typeset dummy x="-1a2b3c4d9u" ;
dummy="${x//~(E)([[:digit:]])|([[:alpha:]])/D}" ; typeset -c
"mar=.sh.match" ; } ; function f1 { typeset -a matchar ; f2 matchar ;
print -v matchxar ; } ; f1; :

Irek

[David Korn]

Subject: Re: [ast-developers] Copying or moving .sh.match via typeset -m or typeset -c doesn't work
--------

Post by Irek Szczesniak
ast-ksh 20130524 prints nothing if we attempt to either move or copy
the contents of .sh.match.
ksh -c 'function f2 { nameref mar=$1 ; typeset dummy x="-1a2b3c4d9u" ;
dummy="${x//~(E)([[:digit:]])|([[:alpha:]])/D}" ; typeset -m
"mar=.sh.match" ; } ; function f1 { typeset -a matchar ; f2 matchar ;
ksh -c 'function f2 { nameref mar=$1 ; typeset dummy x="-1a2b3c4d9u" ;
dummy="${x//~(E)([[:digit:]])|([[:alpha:]])/D}" ; typeset -c
"mar=.sh.match" ; } ; function f1 { typeset -a matchar ; f2 matchar ;
Irek

This is a bug and not an easy one since .sh.match is treated specially
for performance reasons.

David Korn
dgk at research.att.com

[Irek Szczesniak]

Post by David Korn
Subject: Re: [ast-developers] Copying or moving .sh.match via typeset -m or typeset -c doesn't work
--------

Post by Irek Szczesniak
ast-ksh 20130524 prints nothing if we attempt to either move or copy
the contents of .sh.match.
ksh -c 'function f2 { nameref mar=$1 ; typeset dummy x="-1a2b3c4d9u" ;
dummy="${x//~(E)([[:digit:]])|([[:alpha:]])/D}" ; typeset -m
"mar=.sh.match" ; } ; function f1 { typeset -a matchar ; f2 matchar ;
ksh -c 'function f2 { nameref mar=$1 ; typeset dummy x="-1a2b3c4d9u" ;
dummy="${x//~(E)([[:digit:]])|([[:alpha:]])/D}" ; typeset -c
"mar=.sh.match" ; } ; function f1 { typeset -a matchar ; f2 matchar ;
Irek

This is a bug and not an easy one since .sh.match is treated specially
for performance reasons.

Can you reuse the code used by read -C to print the array as text and
read it back in as array?

Irek

[David Korn]

cc: ast-developers at lists.research.att.com
Subject: Re: Re: [ast-developers] Copying or moving .sh.match via typeset -m or typeset -c doesn't work
--------

Post by Irek Szczesniak
ast-ksh 20130524 prints nothing if we attempt to either move or copy
the contents of .sh.match.
ksh -c 'function f2 { nameref mar=$1 ; typeset dummy x="-1a2b3c4d9u" ;
dummy="${x//~(E)([[:digit:]])|([[:alpha:]])/D}" ; typeset -m
"mar=.sh.match" ; } ; function f1 { typeset -a matchar ; f2 matchar ;
ksh -c 'function f2 { nameref mar=$1 ; typeset dummy x="-1a2b3c4d9u" ;
dummy="${x//~(E)([[:digit:]])|([[:alpha:]])/D}" ; typeset -c
"mar=.sh.match" ; } ; function f1 { typeset -a matchar ; f2 matchar ;
Irek

Actually, I found the bug and combined with fixing the typo in
you example, it fixed both of these.

David Korn
dgk at research.att.com