maven-release-plugin auto-increment ?

[David Meunier]

Hi all,

Does anyone knows "auto-increment rules" of the maven-release-plugin  
or where to find documentation about that ?

I put 1.8.a1-0-SNAPSHOT version in my POM and when i release, the next  
version becomes 1.8.a2-0-SNAPSHOT, and i wonder why it's not 1.8.a1-1- 
SNAPSHOT ?

NB : when i put 1.8.1-0-SNAPSHOT, i get 1.8.1-1-SNAPSHOT after release.

Best regards,
David Meunier.