Tcl Switch Weirdness

[Max Drown (Infor)]

Comment with one word outside a block in the switch …

Code:

set mode “start”

switch -exact — $mode {
   start {
       puts “start mode”
       return “”   ;# Nothing specific
   }
       # comment
}

… No errors.

Comment with 2+ words outside a block in the switch …

Code:

set mode “start”

switch -exact — $mode {
   start {
       puts “start mode”
       return “”   ;# Nothing specific
   }
       # a comment
}

… generates an error …

Code:

extra switch pattern with no body, this may be due to a comment incorrectly placed outside of a switch body – see the “switch” documentation
   while executing
“switch -exact — $mode {
       start {
           puts “start mode”
           return “”   ;# Nothing specific
       }
           # a comment
…”
   (file “tmp.tcl” line 3)

. Can anyone explain what is happening?

-- Max Drown (Infor)

Topic

[Max Drown (Infor)]

Oh. I see … *blinks*

Code:

set mode “#”
switch -exact $mode {
   1 { # do nothing }
   2 { # do nothing }
   3 { # do nothing }
   # { puts “this is NOT a comment!” }
   default { # do nothing }
}

-- Max Drown (Infor)

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