What I expected to happen was that the gamerule would be set to true.
What actually happened was that the gamerule stayed false as is.
Steps to Reproduce:
1. Perform a gamerule command like so:
/gamerule doDaylightCycle
2. Notice that the gamerule is set to false
3. Perform the command from step 1.
4. Notice that the gamerule stays false
Cannot confirm in 1.8.2-pre1.
If you don't specify a value for a gamerule, it will just display the current value of it(not changing it).