The "tag" command:

Usage: fossil tag SUBCOMMAND ...

Run various subcommands to control tags and properties.

fossil tag add ?OPTIONS? TAGNAME ARTIFACT-ID ?VALUE?

Add a new tag or property to an artifact referenced by ARTIFACT-ID. For check-ins, the tag will be usable instead of a CHECK-IN in commands such as update and merge. If the --propagate flag is present and ARTIFACT-ID refers to a wiki page, forum post, technote, or check-in, the tag propagates to all descendants of that artifact.

Options:

--date-override DATETIME

Set date and time added

-n|--dry-run

Display the tag text, but do not actually insert it into the database

--propagate

Propagating tag

--raw

Raw tag name. Ignored for non-CHECK-IN artifacts.

--user-override USER

Name USER when adding the tag

The --date-override and --user-override options support importing history from other SCM systems. DATETIME has the form 'YYYY-MMM-DD HH:MM:SS'.

Note that fossil uses some tag prefixes internally and this command will reject tags with these prefixes to avoid causing problems or confusion: "wiki-", "tkt-", "event-".

fossil tag cancel ?--raw? TAGNAME ARTIFACT-ID

Remove the tag TAGNAME from the artifact referenced by ARTIFACT-ID, and also remove the propagation of the tag to any descendants. Use the the -n|--dry-run option to see what would have happened. Certain tag name prefixes are forbidden, as documented for the 'add' subcommand.

Options:

--date-override DATETIME

Set date and time deleted

-n|--dry-run

Display the control artifact, but do not insert it into the database

--raw

Raw tag name. Ignored for non-CHECK-IN artifacts.

--user-override USER

Name USER when deleting the tag

fossil tag find ?OPTIONS? TAGNAME

List all objects that use TAGNAME.

Options:

-n|--limit N

Limit to N results

--raw

Interprets tag as a raw name instead of a branch name and matches any type of artifact. Changes the output to include only the hashes of matching objects.

-t|--type TYPE

One of: ci (check-in), w (wiki), e (event/technote), f (forum post), t (ticket). Default is all types. Ignored if --raw is used.

fossil tag list|ls ?OPTIONS? ?ARTIFACT-ID?

List all tags or, if ARTIFACT-ID is supplied, all tags and their values for that artifact. The tagtype option accepts one of: propagated, singleton, cancel. For historical scripting compatibility, the internal tag types "wiki-", "tkt-", and "event-" (technote) are elided by default unless the --raw or --prefix options are used.

Options:

-v|--inverse

Inverse the meaning of --tagtype TYPE

--prefix

List only tags with the given prefix Fossil-internal prefixes include "sym-" (branch name), "wiki-", "event-" (technote), and "tkt-" (ticket). The prefix is stripped from the resulting list unless --raw is provided. Ignored if ARTIFACT-ID is provided.

--raw

List raw names of tags

--tagtype TYPE

List only tags of type TYPE, which must be one of: cancel, singleton, propagated

The option --raw allows the manipulation of all types of tags used for various internal purposes in fossil. It also shows "cancel" tags for the "find" and "list" subcommands. You should not use this option to make changes unless you are sure what you are doing.

If you need to use a tagname that might be confused with a hexadecimal baseline or artifact ID, you can explicitly disambiguate it by prefixing it with "tag:". For instance:

fossil update decaf

will be taken as an artifact or baseline ID and fossil will probably complain that no such revision was found. However

fossil update tag:decaf

will assume that "decaf" is a tag/branch name.