[CMake] Bug in if/else/endif in combination with option?

[Marcel Loose]

Hi all,

I am running cmake version 2.6-patch 2. 
I stumbled over the following, and I think it is a bug.

If I run cmake on this CMakeLists.txt:

cmake_minimum_required(VERSION 2.6)
set(options
  fine
  good
  bad)
#option(fine "Fine" OFF)
#option(good "Good" OFF)
option(bad "Bad" OFF)
foreach(opt ${options})
  message(STATUS "opt = ${opt}")
  if(${opt} STREQUAL fine)
    message(STATUS "This is fine")
  elseif(${opt} STREQUAL good)
    message(STATUS "This is good")
  else(${opt} STREQUAL fine)
    message(FATAL_ERROR "This is bad!")
  endif(${opt} STREQUAL fine)
endforeach(opt ${options})

I get the following output:
...
-- val = fine
-- fine
-- val = good
-- good
-- val = bad
CMake Error at CMakeLists.txt:14 (message):
  bad
...

which is to be expected.

However, when I uncomment the line option(fine...), I get the following
output:
...
-- opt = fine
-- This is fine
-- opt = good
-- This is good
-- opt = bad
-- This is fine
-- Configuring done
...

which is clearly wrong! Uncommenting the line option(good...) yields
almost the same output, but now the elseif branch is followed.

Is this a bug, or am I overlooking something?

Best regards,
Marcel Loose.