[PATCH v4] nmbug: Add an 'init' command
W. Trevor King
wking at tremily.us
Sun Jan 18 16:40:10 PST 2015
For folks that want to start versioning a new tag-space, instead of
cloning one that someone else has already started.
The empty-blob hash-object call avoids errors like:
$ nmbug commit
error: invalid object 100644 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 for
'tags/...'
fatal: git-write-tree: error building trees
'git HASH(0x9ef3eb8) write-tree' exited with nonzero value
David Bremner suggested [1]:
$ git hash-object -w /dev/null
instead of my Python version of:
$ git hash-object -w --stdin <&-
but I expect that closing stdin is more portable than the /dev/null
path (which doesn't exist on Windows, for example).
The --bare init and use of NMBGIT as the work tree (what could go
wrong with an empty commit?) are suggestions from Michal Sojka [2].
[1]: id:87y4vu6uvf.fsf at maritornes.cs.unb.ca
http://thread.gmane.org/gmane.mail.notmuch.general/18626/focus=18720
[2]: id:87a93a5or2.fsf at resox.2x.cz
http://thread.gmane.org/gmane.mail.notmuch.general/19495/focus=19767
---
Since v3 [1] I've incorporated Michal's suggestions [2]:
* Start with 'git --git-dir {NMBGIT} init --bare
* Use NMBGIT instead of a temporary workdir when creating the initial
“Start a new nmbug repository” commit.
As well as the core.logallrefupdates tweak I turned up in testing [3].
[1]: id:113512958b3fd64902517c1c55576faef816f852.1414532174.git.wking at tremily.us
http://thread.gmane.org/gmane.mail.notmuch.general/19495
[2]: id:87a93a5or2.fsf at resox.2x.cz
http://thread.gmane.org/gmane.mail.notmuch.general/19495/focus=19767
[3]: id:20141129201829.GI4062 at odin.tremily.us
http://thread.gmane.org/gmane.mail.notmuch.general/19495/focus=19774
devel/nmbug/nmbug | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/devel/nmbug/nmbug b/devel/nmbug/nmbug
index 932ec12..1297345 100755
--- a/devel/nmbug/nmbug
+++ b/devel/nmbug/nmbug
@@ -374,6 +374,25 @@ def fetch(remote=None):
_git(args=args, wait=True)
+def init(remote=None):
+ """
+ Create an empty nmbug repository.
+
+ This wraps 'git init' with a few extra steps to support subsequent
+ status and commit commands.
+ """
+ _spawn(args=['git', '--git-dir', NMBGIT, 'init', '--bare'], wait=True)
+ _git(args=['config', 'core.logallrefupdates', 'true'], wait=True)
+ # create an empty blob (e69de29bb2d1d6434b8b29ae775ad8c2e48c5391)
+ _git(args=['hash-object', '-w', '--stdin'], input='', wait=True)
+ _git(
+ args=[
+ 'commit', '--allow-empty', '-m', 'Start a new nmbug repository'
+ ],
+ additional_env={'GIT_WORK_TREE': NMBGIT},
+ wait=True)
+
+
def checkout():
"""
Update the notmuch database from Git.
@@ -725,6 +744,7 @@ if __name__ == '__main__':
'commit',
'fetch',
'help',
+ 'init',
'log',
'merge',
'pull',
--
2.1.0.60.g85f0837
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