我正在将化石用于某种增量备份数据库。到目前为止，它工作得很好，除了清除旧条目。因为这一切都是自动化的，并且很简单，所以所有签入/回滚都在主干上工作。
现在我尝试添加清除旧签入的选项，但我不能，总是遇到错误消息：
cannot purge the current checkout
也许我以错误的方式使用 purge，尽管我无法找到正确的方法。目前，我在要删除的签入中添加了一个标签，并尝试清除它们不起作用。从这些签到中删除行李箱标签没有任何区别。在我的本地存储库关闭时运行 purge 是不可能的，因为化石需要 vvar 表来执行此操作。
我做了一个例子来说明：
D:\_tmp\repo>fossil init test
project-id: d16c0c72d95305884776f5c6e4d440ec687511a3
server-id: 1de96e7234a3e2b6561a31ad0cb9d55243be0bdb
admin-user: usr (initial password is "9dd6fb")
D:\_tmp\repo>fossil open test
project-name: <unnamed>
repository: D:/_tmp/repo/test
local-root: D:/_tmp/repo/
config-db: C:/Users/usr/AppData/Local/_fossil
project-code: d16c0c72d95305884776f5c6e4d440ec687511a3
checkout: 48edad6b8a3a946ad92b96bc41a2911ee709d6b5 2015-08-20 12:54:17 UTC
leaf: open
tags: trunk
comment: initial empty check-in (user: usr)
check-ins: 1
D:\_tmp\repo>fossil addremove
ADDED closedpurge.txt
added 1 files, deleted 0 files
D:\_tmp\repo>fossil commit -m auto
./closedpurge.txt contains CR/NL line endings. Use --no-warnings or the "crnl-gl
ob" setting to disable this warning.
Commit anyhow (a=all/c=convert/y/N)? a
New_Version: 3ffebd89c0d7e8ac92a21f3a0085568c39e113ea
D:\_tmp\repo>fossil addremove
DELETED closedpurge.txt
added 0 files, deleted 1 files
D:\_tmp\repo>fossil commit -m auto
New_Version: be0ac15264616ce86f0fce0b8a2de05c80ea3e0b
D:\_tmp\repo>fossil timeline
=== 2015-08-20 ===
12:55:05 [be0ac15264] *CURRENT* auto (user: usr tags: trunk)
12:54:47 [3ffebd89c0] auto (user: usr tags: trunk)
12:54:17 [48edad6b8a] initial empty check-in (user: usr tags: trunk)
+++ no more data (3) +++
D:\_tmp\repo>fossil tag add topurge 3ffebd89c0
D:\_tmp\repo>fossil timeline
=== 2015-08-20 ===
12:56:37 [98c3a4f991] Edit [3ffebd89c0d7e8ac|3ffebd89c0]: Add tag "topurge".
(user: usr)
12:55:05 [be0ac15264] *CURRENT* auto (user: usr tags: trunk)
12:54:47 [3ffebd89c0] auto (user: usr tags: trunk, topurge)
12:54:17 [48edad6b8a] initial empty check-in (user: usr tags: trunk)
+++ no more data (4) +++
D:\_tmp\repo>fossil purge topurge
cannot purge the current checkout
D:\_tmp\repo>fossil tag cancel trunk 3ffebd89c0
D:\_tmp\repo>fossil timeline
=== 2015-08-20 ===
12:57:30 [21885761c2] Edit [3ffebd89c0d7e8ac|3ffebd89c0]: Cancel tag "trunk".
(user: usr)
12:56:37 [98c3a4f991] Edit [3ffebd89c0d7e8ac|3ffebd89c0]: Add tag "topurge".
(user: usr)
12:55:05 [be0ac15264] *CURRENT* auto (user: usr)
12:54:47 [3ffebd89c0] auto (user: usr tags: topurge)
12:54:17 [48edad6b8a] initial empty check-in (user: usr tags: trunk)
+++ no more data (5) +++
D:\_tmp\repo>fossil purge topurge
cannot purge the current checkout
D:\_tmp\repo>fossil close
D:\_tmp\repo>fossil purge topurge -R test
SQLITE_ERROR: no such table: vvar
fossil: no such table: vvar
SELECT value FROM vvar WHERE name='checkout'
我所做的只是初始化一个新的化石存储库；添加单个文件并提交；rmeove 文件并再次提交；并尝试清除添加文件的检查。
编辑：我使用化石版本 1.32 和 1.33 对此进行了测试