Trying to retrieve list element greater than list length returns null.

[luckyRaj]

This is a Bug while trying to retrieve element with index greater than list size.

For Eg :
set list { a b c }

llength $list = 3

lindex $list 0 = a
lindex $list 1 = b
lindex $list 2 = c

Bug : lindex $list 4 = null

WorkAround :
lindexWarn { l idx } {
if { $idx > [ llength $l ]}{
error "$idx is greater than list size"
} else { return [ lindex $l $idx ] }
}

 

[4595]

change { $idx > [ llength $l ]}

to { $idx >= [ llength $l ]}

and should be OK