01-08-2008
Can you transform your posted code to a complete program that demonstrates just the issue while being short, so that others can copy onto their systems to run and trace. Without seeing the content of the variables, it is impossible for anyone to help you debug.
And you have not even mentioned in what way the else part is not working. It's not running as expected? It is being executed in a wrong way? So, be specific with what you are expecting.
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LEARN ABOUT OPENSOLARIS
append
append(1T) Tcl Built-In Commands append(1T)
__________________________________________________________________________________________________________________________________________________
NAME
append - Append to variable
SYNOPSIS
append varName ?value value value ...?
_________________________________________________________________
DESCRIPTION
Append all of the value arguments to the current value of variable varName. If varName doesn't exist, it is given a value equal to the
concatenation of all the value arguments. The result of this command is the new value stored in variable varName. This command provides
an efficient way to build up long variables incrementally. For example, ``append a $b'' is much more efficient than ``set a $a$b'' if $a
is long.
EXAMPLE
Building a string of comma-separated numbers piecemeal using a loop.
set var 0
for {set i 1} {$i<=10} {incr i} {
append var "," $i
}
puts $var
# Prints 0,1,2,3,4,5,6,7,8,9,10
SEE ALSO
concat(1T), lappend(1T)
KEYWORDS
append, variable
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWTcl |
+--------------------+-----------------+
|Interface Stability | Uncommitted |
+--------------------+-----------------+
NOTES
Source for Tcl is available on http://opensolaris.org.
Tcl append(1T)