Next: , Up: Revisions



4.1 Revision numbers

Each version of a file has a unique revision number. Revision numbers look like 1.1, 1.2, 1.3.2.2 or even 1.3.2.2.4.5. A revision number always has an even number of period-separated decimal integers. By default revision 1.1 is the first revision of a file. Each successive revision is given a new number by increasing the rightmost number by one. The following figure displays a few revisions, with newer revisions to the right.

            +-----+    +-----+    +-----+    +-----+    +-----+
            ! 1.1 !----! 1.2 !----! 1.3 !----! 1.4 !----! 1.5 !
            +-----+    +-----+    +-----+    +-----+    +-----+

It is also possible to end up with numbers containing more than one period, for example 1.3.2.2. Such revisions represent revisions on branches (see Branching and merging); such revision numbers are explained in detail in Branches and revisions.