My application compares 2 lists of strings using lsearch. This does not work when the string contains [] characters, for example:

   set l1 [list {m1} {m2} {m_[2]_n} {m3}]
   set l2 [list {m1} {m2} {m_[2]_n} {m3} {m4}]
   foreach n [split $l2 " "] {
     set v1 [lsearch $l1 $n]
     if {$v1 < 0} {
         puts "ERROR: cannot find $n in list"
     }      
   }

ERROR: cannot find {m_[2]_n} in list
ERROR: cannot find m4 in list

Does anyone know how to make this work?



lsearch defaults to using glob style matching on the pattern - so square brackets, ? and * will cause problems.   Use the -exact option.

This worked for me:

Code:

set l1 [list {m1} {m2} {m_[2]_n} {m3}] set l2 [list {m1} {m2} {m_[2]_n} {m3} {m4}] foreach n $l2 { puts $n set v1 [lsearch -exact $l1 $n] if {$v1 < 0} { puts "ERROR: cannot find $n in list" } }

Good question ... had me wondering for a minute!   Welcome to Opentalk.

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