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Version Management with CVS - the CVS manual
by Per Cederqvist et al.
Paperback (6"x9"), 216 pages, 8 figures
ISBN 0954161718
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4.5 Specifying what to tag from the working directory

The example in the previous section demonstrates one of the most common ways to choose which revisions to tag. Namely, running the cvs tag command without arguments causes CVS to select the revisions which are checked out in the current working directory. For example, if the copy of ‘backend.c’ in working directory was checked out from revision 1.4, then CVS will tag revision 1.4. Note that the tag is applied immediately to revision 1.4 in the repository; tagging is not like modifying a file, or other operations in which one first modifies the working directory and then runs cvs commit to transfer that modification to the repository.

One potentially surprising aspect of the fact that cvs tag operates on the repository is that you are tagging the checked-in revisions, which may differ from locally modified files in your working directory. If you want to avoid doing this by mistake, specify the ‘-c’ option to cvs tag. If there are any locally modified files, CVS will abort with an error before it tags any files:

$ cvs tag -c rel-0-4
cvs tag: backend.c is locally modified
cvs [tag aborted]: correct the above errors first!
ISBN 0954161718Version Management with CVS - the CVS manualSee the print edition