1 """Python GIT interface
5 Copyright (C) 2005, Catalin Marinas <catalin.marinas@gmail.com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 import sys, os, re, gitmergeonefile
22 from shutil import copyfile
24 from stgit.exception import *
25 from stgit import basedir
26 from stgit.utils import *
27 from stgit.out import *
28 from stgit.run import *
29 from stgit.config import config
32 class GitException(StgException):
35 # When a subprocess has a problem, we want the exception to be a
36 # subclass of GitException.
37 class GitRunException(GitException):
48 """An author, committer, etc."""
49 def __init__(self, name = None, email = None, date = '',
51 self.name = self.email = self.date = None
52 if name or email or date:
58 assert not (name or email or date)
60 m = re.match(r'^(.+)<(.+)>(.*)$', s)
62 return [x.strip() or None for x in m.groups()]
63 self.name, self.email, self.date = parse_desc(desc)
64 def set_name(self, val):
67 def set_email(self, val):
70 def set_date(self, val):
74 if self.name and self.email:
75 return '%s <%s>' % (self.name, self.email)
77 raise GitException, 'not enough identity data'
80 """Handle the commit objects
82 def __init__(self, id_hash):
83 self.__id_hash = id_hash
85 lines = GRun('git-cat-file', 'commit', id_hash).output_lines()
86 for i in range(len(lines)):
89 break # we've seen all the header fields
90 key, val = line.split(' ', 1)
95 elif key == 'committer':
96 self.__committer = val
98 pass # ignore other headers
99 self.__log = '\n'.join(lines[i+1:])
101 def get_id_hash(self):
102 return self.__id_hash
107 def get_parent(self):
108 parents = self.get_parents()
114 def get_parents(self):
115 return GRun('git-rev-list', '--parents', '--max-count=1', self.__id_hash
116 ).output_one_line().split()[1:]
118 def get_author(self):
121 def get_committer(self):
122 return self.__committer
128 return self.get_id_hash()
130 # dictionary of Commit objects, used to avoid multiple calls to git
137 def get_commit(id_hash):
138 """Commit objects factory. Save/look-up them in the __commits
143 if id_hash in __commits:
144 return __commits[id_hash]
146 commit = Commit(id_hash)
147 __commits[id_hash] = commit
151 """Return the list of file conflicts
153 conflicts_file = os.path.join(basedir.get(), 'conflicts')
154 if os.path.isfile(conflicts_file):
155 f = file(conflicts_file)
156 names = [line.strip() for line in f.readlines()]
163 files = [os.path.join(basedir.get(), 'info', 'exclude')]
164 user_exclude = config.get('core.excludesfile')
166 files.append(user_exclude)
169 def ls_files(files, tree = None, full_name = True):
170 """Return the files known to GIT or raise an error otherwise. It also
171 converts the file to the full path relative the the .git directory.
178 args.append('--with-tree=%s' % tree)
180 args.append('--full-name')
184 return GRun('git-ls-files', '--error-unmatch', *args).output_lines()
185 except GitRunException:
186 # just hide the details of the git-ls-files command we use
187 raise GitException, \
188 'Some of the given paths are either missing or not known to GIT'
190 def tree_status(files = None, tree_id = 'HEAD', unknown = False,
191 noexclude = True, verbose = False, diff_flags = []):
192 """Get the status of all changed files, or of a selected set of
193 files. Returns a list of pairs - (status, filename).
195 If 'not files', it will check all files, and optionally all
196 unknown files. If 'files' is a list, it will only check the files
199 assert not files or not unknown
202 out.start('Checking for changes in the working directory')
210 cmd = ['git-ls-files', '-z', '--others', '--directory',
211 '--no-empty-directory']
213 cmd += ['--exclude=%s' % s for s in
214 ['*.[ao]', '*.pyc', '.*', '*~', '#*', 'TAGS', 'tags']]
215 cmd += ['--exclude-per-directory=.gitignore']
216 cmd += ['--exclude-from=%s' % fn
217 for fn in exclude_files()
218 if os.path.exists(fn)]
220 lines = GRun(*cmd).raw_output().split('\0')
221 cache_files += [('?', line) for line in lines if line]
224 conflicts = get_conflicts()
227 cache_files += [('C', filename) for filename in conflicts
228 if not files or filename in files]
231 args = diff_flags + [tree_id]
233 args += ['--'] + files
234 for line in GRun('git-diff-index', *args).output_lines():
235 fs = tuple(line.rstrip().split(' ',4)[-1].split('\t',1))
236 if fs[1] not in conflicts:
237 cache_files.append(fs)
244 def local_changes(verbose = True):
245 """Return true if there are local changes in the tree
247 return len(tree_status(verbose = verbose)) != 0
251 hr = re.compile(r'^[0-9a-f]{40} refs/heads/(.+)$')
252 for line in GRun('git-show-ref', '--heads').output_lines():
254 heads.append(m.group(1))
261 """Verifies the HEAD and returns the SHA1 id that represents it
266 __head = rev_parse('HEAD')
269 class DetachedHeadException(GitException):
271 GitException.__init__(self, 'Not on any branch')
274 """Return the name of the file pointed to by the HEAD symref.
275 Throw an exception if HEAD is detached."""
278 'refs/heads/', GRun('git-symbolic-ref', '-q', 'HEAD'
280 except GitRunException:
281 raise DetachedHeadException()
283 def set_head_file(ref):
284 """Resets HEAD to point to a new ref
286 # head cache flushing is needed since we might have a different value
290 GRun('git-symbolic-ref', 'HEAD', 'refs/heads/%s' % ref).run()
291 except GitRunException:
292 raise GitException, 'Could not set head to "%s"' % ref
294 def set_ref(ref, val):
295 """Point ref at a new commit object."""
297 GRun('git-update-ref', ref, val).run()
298 except GitRunException:
299 raise GitException, 'Could not update %s to "%s".' % (ref, val)
301 def set_branch(branch, val):
302 set_ref('refs/heads/%s' % branch, val)
305 """Sets the HEAD value
309 if not __head or __head != val:
313 # only allow SHA1 hashes
314 assert(len(__head) == 40)
316 def __clear_head_cache():
317 """Sets the __head to None so that a re-read is forced
324 """Refresh index with stat() information from the working directory.
326 GRun('git-update-index', '-q', '--unmerged', '--refresh').run()
328 def rev_parse(git_id):
329 """Parse the string and return a verified SHA1 id
332 return GRun('git-rev-parse', '--verify', git_id
333 ).discard_stderr().output_one_line()
334 except GitRunException:
335 raise GitException, 'Unknown revision: %s' % git_id
344 def branch_exists(branch):
345 return ref_exists('refs/heads/%s' % branch)
347 def create_branch(new_branch, tree_id = None):
348 """Create a new branch in the git repository
350 if branch_exists(new_branch):
351 raise GitException, 'Branch "%s" already exists' % new_branch
353 current_head = get_head()
354 set_head_file(new_branch)
355 __set_head(current_head)
357 # a checkout isn't needed if new branch points to the current head
361 if os.path.isfile(os.path.join(basedir.get(), 'MERGE_HEAD')):
362 os.remove(os.path.join(basedir.get(), 'MERGE_HEAD'))
364 def switch_branch(new_branch):
365 """Switch to a git branch
369 if not branch_exists(new_branch):
370 raise GitException, 'Branch "%s" does not exist' % new_branch
372 tree_id = rev_parse('refs/heads/%s^{commit}' % new_branch)
373 if tree_id != get_head():
376 GRun('git-read-tree', '-u', '-m', get_head(), tree_id).run()
377 except GitRunException:
378 raise GitException, 'git-read-tree failed (local changes maybe?)'
380 set_head_file(new_branch)
382 if os.path.isfile(os.path.join(basedir.get(), 'MERGE_HEAD')):
383 os.remove(os.path.join(basedir.get(), 'MERGE_HEAD'))
386 if not ref_exists(ref):
387 raise GitException, '%s does not exist' % ref
388 sha1 = GRun('git-show-ref', '-s', ref).output_one_line()
390 GRun('git-update-ref', '-d', ref, sha1).run()
391 except GitRunException:
392 raise GitException, 'Failed to delete ref %s' % ref
394 def delete_branch(name):
395 delete_ref('refs/heads/%s' % name)
397 def rename_ref(from_ref, to_ref):
398 if not ref_exists(from_ref):
399 raise GitException, '"%s" does not exist' % from_ref
400 if ref_exists(to_ref):
401 raise GitException, '"%s" already exists' % to_ref
403 sha1 = GRun('git-show-ref', '-s', from_ref).output_one_line()
405 GRun('git-update-ref', to_ref, sha1, '0'*40).run()
406 except GitRunException:
407 raise GitException, 'Failed to create new ref %s' % to_ref
409 GRun('git-update-ref', '-d', from_ref, sha1).run()
410 except GitRunException:
411 raise GitException, 'Failed to delete ref %s' % from_ref
413 def rename_branch(from_name, to_name):
414 """Rename a git branch."""
415 rename_ref('refs/heads/%s' % from_name, 'refs/heads/%s' % to_name)
417 if get_head_file() == from_name:
418 set_head_file(to_name)
419 except DetachedHeadException:
420 pass # detached HEAD, so the renamee can't be the current branch
421 reflog_dir = os.path.join(basedir.get(), 'logs', 'refs', 'heads')
422 if os.path.exists(reflog_dir) \
423 and os.path.exists(os.path.join(reflog_dir, from_name)):
424 rename(reflog_dir, from_name, to_name)
427 """Add the files or recursively add the directory contents
429 # generate the file list
432 if not os.path.exists(i):
433 raise GitException, 'Unknown file or directory: %s' % i
436 # recursive search. We only add files
437 for root, dirs, local_files in os.walk(i):
438 for name in [os.path.join(root, f) for f in local_files]:
439 if os.path.isfile(name):
440 files.append(os.path.normpath(name))
441 elif os.path.isfile(i):
442 files.append(os.path.normpath(i))
444 raise GitException, '%s is not a file or directory' % i
448 GRun('git-update-index', '--add', '--').xargs(files)
449 except GitRunException:
450 raise GitException, 'Unable to add file'
452 def __copy_single(source, target, target2=''):
453 """Copy file or dir named 'source' to name target+target2"""
455 # "source" (file or dir) must match one or more git-controlled file
456 realfiles = GRun('git-ls-files', source).output_lines()
457 if len(realfiles) == 0:
458 raise GitException, '"%s" matches no git-controled files' % source
460 if os.path.isdir(source):
461 # physically copy the files, and record them to add them in one run
463 re_string='^'+source+'/(.*)$'
464 prefix_regexp = re.compile(re_string)
465 for f in [f.strip() for f in realfiles]:
466 m = prefix_regexp.match(f)
468 raise Exception, '"%s" does not match "%s"' % (f, re_string)
469 newname = target+target2+'/'+m.group(1)
470 if not os.path.exists(os.path.dirname(newname)):
471 os.makedirs(os.path.dirname(newname))
473 newfiles.append(newname)
476 else: # files, symlinks, ...
477 newname = target+target2
478 copyfile(source, newname)
482 def copy(filespecs, target):
483 if os.path.isdir(target):
484 # target is a directory: copy each entry on the command line,
485 # with the same name, into the target
486 target = target.rstrip('/')
488 # first, check that none of the children of the target
489 # matching the command line aleady exist
490 for filespec in filespecs:
491 entry = target+ '/' + os.path.basename(filespec.rstrip('/'))
492 if os.path.exists(entry):
493 raise GitException, 'Target "%s" already exists' % entry
495 for filespec in filespecs:
496 filespec = filespec.rstrip('/')
497 basename = '/' + os.path.basename(filespec)
498 __copy_single(filespec, target, basename)
500 elif os.path.exists(target):
501 raise GitException, 'Target "%s" exists but is not a directory' % target
502 elif len(filespecs) != 1:
503 raise GitException, 'Cannot copy more than one file to non-directory'
506 # at this point: len(filespecs)==1 and target does not exist
508 # check target directory
509 targetdir = os.path.dirname(target)
510 if targetdir != '' and not os.path.isdir(targetdir):
511 raise GitException, 'Target directory "%s" does not exist' % targetdir
513 __copy_single(filespecs[0].rstrip('/'), target)
516 def rm(files, force = False):
517 """Remove a file from the repository
521 if os.path.exists(f):
522 raise GitException, '%s exists. Remove it first' %f
524 GRun('git-update-index', '--remove', '--').xargs(files)
527 GRun('git-update-index', '--force-remove', '--').xargs(files)
535 """Return the user information.
539 name=config.get('user.name')
540 email=config.get('user.email')
541 __user = Person(name, email)
545 """Return the author information.
550 # the environment variables take priority over config
552 date = os.environ['GIT_AUTHOR_DATE']
555 __author = Person(os.environ['GIT_AUTHOR_NAME'],
556 os.environ['GIT_AUTHOR_EMAIL'],
563 """Return the author information.
568 # the environment variables take priority over config
570 date = os.environ['GIT_COMMITTER_DATE']
573 __committer = Person(os.environ['GIT_COMMITTER_NAME'],
574 os.environ['GIT_COMMITTER_EMAIL'],
580 def update_cache(files = None, force = False):
581 """Update the cache information for the given files
583 cache_files = tree_status(files, verbose = False)
585 # everything is up-to-date
586 if len(cache_files) == 0:
589 # check for unresolved conflicts
590 if not force and [x for x in cache_files
591 if x[0] not in ['M', 'N', 'A', 'D']]:
592 raise GitException, 'Updating cache failed: unresolved conflicts'
595 add_files = [x[1] for x in cache_files if x[0] in ['N', 'A']]
596 rm_files = [x[1] for x in cache_files if x[0] in ['D']]
597 m_files = [x[1] for x in cache_files if x[0] in ['M']]
599 GRun('git-update-index', '--add', '--').xargs(add_files)
600 GRun('git-update-index', '--force-remove', '--').xargs(rm_files)
601 GRun('git-update-index', '--').xargs(m_files)
605 def commit(message, files = None, parents = None, allowempty = False,
606 cache_update = True, tree_id = None, set_head = False,
607 author_name = None, author_email = None, author_date = None,
608 committer_name = None, committer_email = None):
609 """Commit the current tree to repository
614 # Get the tree status
615 if cache_update and parents != []:
616 changes = update_cache(files)
617 if not changes and not allowempty:
618 raise GitException, 'No changes to commit'
620 # get the commit message
623 elif message[-1:] != '\n':
626 # write the index to repository
628 tree_id = GRun('git-write-tree').output_one_line()
634 env['GIT_AUTHOR_NAME'] = author_name
636 env['GIT_AUTHOR_EMAIL'] = author_email
638 env['GIT_AUTHOR_DATE'] = author_date
640 env['GIT_COMMITTER_NAME'] = committer_name
642 env['GIT_COMMITTER_EMAIL'] = committer_email
643 commit_id = GRun('git-commit-tree', tree_id,
644 *sum([['-p', p] for p in parents], [])
645 ).env(env).raw_input(message).output_one_line()
647 __set_head(commit_id)
651 def apply_diff(rev1, rev2, check_index = True, files = None):
652 """Apply the diff between rev1 and rev2 onto the current
653 index. This function doesn't need to raise an exception since it
654 is only used for fast-pushing a patch. If this operation fails,
655 the pushing would fall back to the three-way merge.
658 index_opt = ['--index']
665 diff_str = diff(files, rev1, rev2)
668 GRun('git-apply', *index_opt).raw_input(
669 diff_str).discard_stderr().no_output()
670 except GitRunException:
675 def merge(base, head1, head2, recursive = False):
676 """Perform a 3-way merge between base, head1 and head2 into the
683 # this operation tracks renames but it is slower (used in
684 # general when pushing or picking patches)
686 # discard output to mask the verbose prints of the tool
687 GRun('git-merge-recursive', base, '--', head1, head2
689 except GitRunException, ex:
693 # the fast case where we don't track renames (used when the
694 # distance between base and heads is small, i.e. folding or
695 # synchronising patches)
697 GRun('git-read-tree', '-u', '-m', '--aggressive',
698 base, head1, head2).run()
699 except GitRunException:
700 raise GitException, 'git-read-tree failed (local changes maybe?)'
702 # check the index for unmerged entries
704 stages_re = re.compile('^([0-7]+) ([0-9a-f]{40}) ([1-3])\t(.*)$', re.S)
706 for line in GRun('git-ls-files', '--unmerged', '--stage', '-z'
707 ).raw_output().split('\0'):
711 mode, hash, stage, path = stages_re.findall(line)[0]
713 if not path in files:
715 files[path]['1'] = ('', '')
716 files[path]['2'] = ('', '')
717 files[path]['3'] = ('', '')
719 files[path][stage] = (mode, hash)
721 if err_output and not files:
722 # if no unmerged files, there was probably a different type of
723 # error and we have to abort the merge
724 raise GitException, err_output
726 # merge the unmerged files
729 # remove additional files that might be generated for some
730 # newer versions of GIT
731 for suffix in [base, head1, head2]:
734 fname = path + '~' + suffix
735 if os.path.exists(fname):
739 if gitmergeonefile.merge(stages['1'][1], stages['2'][1],
740 stages['3'][1], path, stages['1'][0],
741 stages['2'][0], stages['3'][0]) != 0:
745 raise GitException, 'GIT index merging failed (possible conflicts)'
747 def diff(files = None, rev1 = 'HEAD', rev2 = None, diff_flags = []):
748 """Show the diff between rev1 and rev2
754 return GRun('git-diff-tree', '-p',
755 *(diff_flags + [rev1, rev2, '--'] + files)).raw_output()
759 return GRun('git-diff-index', '-p', '-R',
760 *(diff_flags + [rev2, '--'] + files)).raw_output()
762 return GRun('git-diff-index', '-p',
763 *(diff_flags + [rev1, '--'] + files)).raw_output()
767 # TODO: take another parameter representing a diff string as we
768 # usually invoke git.diff() form the calling functions
769 def diffstat(files = None, rev1 = 'HEAD', rev2 = None):
770 """Return the diffstat between rev1 and rev2."""
771 return GRun('git-apply', '--stat', '--summary'
772 ).raw_input(diff(files, rev1, rev2)).raw_output()
774 def files(rev1, rev2, diff_flags = []):
775 """Return the files modified between rev1 and rev2
779 for line in GRun('git-diff-tree', *(diff_flags + ['-r', rev1, rev2])
781 result.append('%s %s' % tuple(line.split(' ', 4)[-1].split('\t', 1)))
783 return '\n'.join(result)
785 def barefiles(rev1, rev2):
786 """Return the files modified between rev1 and rev2, without status info
790 for line in GRun('git-diff-tree', '-r', rev1, rev2).output_lines():
791 result.append(line.split(' ', 4)[-1].split('\t', 1)[-1])
793 return '\n'.join(result)
795 def pretty_commit(commit_id = 'HEAD', diff_flags = []):
796 """Return a given commit (log + diff)
798 return GRun('git-diff-tree',
800 + ['--cc', '--always', '--pretty', '-r', commit_id])
803 def checkout(files = None, tree_id = None, force = False):
804 """Check out the given or all files
808 GRun('git-read-tree', '--reset', tree_id).run()
809 except GitRunException:
810 raise GitException, 'Failed git-read-tree --reset %s' % tree_id
812 cmd = ['git-checkout-index', '-q', '-u']
816 GRun(*(cmd + ['--'])).xargs(files)
818 GRun(*(cmd + ['-a'])).run()
820 def switch(tree_id, keep = False):
821 """Switch the tree to the given id
824 # only update the index while keeping the local changes
825 GRun('git-read-tree', tree_id).run()
829 GRun('git-read-tree', '-u', '-m', get_head(), tree_id).run()
830 except GitRunException:
831 raise GitException, 'git-read-tree failed (local changes maybe?)'
835 def reset(files = None, tree_id = None, check_out = True):
836 """Revert the tree changes relative to the given tree_id. It removes
843 cache_files = tree_status(files, tree_id)
844 # files which were added but need to be removed
845 rm_files = [x[1] for x in cache_files if x[0] in ['A']]
847 checkout(files, tree_id, True)
848 # checkout doesn't remove files
849 map(os.remove, rm_files)
851 # if the reset refers to the whole tree, switch the HEAD as well
855 def fetch(repository = 'origin', refspec = None):
856 """Fetches changes from the remote repository, using 'git-fetch'
866 command = config.get('branch.%s.stgit.fetchcmd' % get_head_file()) or \
867 config.get('stgit.fetchcmd')
868 GRun(*(command.split() + args)).run()
870 def pull(repository = 'origin', refspec = None):
871 """Fetches changes from the remote repository, using 'git-pull'
881 command = config.get('branch.%s.stgit.pullcmd' % get_head_file()) or \
882 config.get('stgit.pullcmd')
883 GRun(*(command.split() + args)).run()
885 def rebase(tree_id = None):
886 """Rebase the current tree to the give tree_id. The tree_id
887 argument may be something other than a GIT id if an external
890 command = config.get('branch.%s.stgit.rebasecmd' % get_head_file()) \
891 or config.get('stgit.rebasecmd')
897 raise GitException, 'Default rebasing requires a commit id'
899 # clear the HEAD cache as the custom rebase command will update it
901 GRun(*(command.split() + args)).run()
904 reset(tree_id = tree_id)
907 """Repack all objects into a single pack
909 GRun('git-repack', '-a', '-d', '-f').run()
911 def apply_patch(filename = None, diff = None, base = None,
913 """Apply a patch onto the current or given index. There must not
914 be any local changes in the tree, otherwise the command fails
926 orig_head = get_head()
932 GRun('git-apply', '--index').raw_input(diff).no_output()
933 except GitRunException:
937 # write the failed diff to a file
938 f = file('.stgit-failed.patch', 'w+')
941 out.warn('Diff written to the .stgit-failed.patch file')
946 top = commit(message = 'temporary commit used for applying a patch',
949 merge(base, orig_head, top)
951 def clone(repository, local_dir):
952 """Clone a remote repository. At the moment, just use the
955 GRun('git-clone', repository, local_dir).run()
957 def modifying_revs(files, base_rev, head_rev):
958 """Return the revisions from the list modifying the given files."""
959 return GRun('git-rev-list', '%s..%s' % (base_rev, head_rev), '--', *files
962 def refspec_localpart(refspec):
963 m = re.match('^[^:]*:([^:]*)$', refspec)
967 raise GitException, 'Cannot parse refspec "%s"' % line
969 def refspec_remotepart(refspec):
970 m = re.match('^([^:]*):[^:]*$', refspec)
974 raise GitException, 'Cannot parse refspec "%s"' % line
977 def __remotes_from_config():
978 return config.sections_matching(r'remote\.(.*)\.url')
980 def __remotes_from_dir(dir):
981 d = os.path.join(basedir.get(), dir)
982 if os.path.exists(d):
988 """Return the list of remotes in the repository
990 return (set(__remotes_from_config())
991 | set(__remotes_from_dir('remotes'))
992 | set(__remotes_from_dir('branches')))
994 def remotes_local_branches(remote):
995 """Returns the list of local branches fetched from given remote
999 if remote in __remotes_from_config():
1000 for line in config.getall('remote.%s.fetch' % remote):
1001 branches.append(refspec_localpart(line))
1002 elif remote in __remotes_from_dir('remotes'):
1003 stream = open(os.path.join(basedir.get(), 'remotes', remote), 'r')
1005 # Only consider Pull lines
1006 m = re.match('^Pull: (.*)\n$', line)
1008 branches.append(refspec_localpart(m.group(1)))
1010 elif remote in __remotes_from_dir('branches'):
1011 # old-style branches only declare one branch
1012 branches.append('refs/heads/'+remote);
1014 raise GitException, 'Unknown remote "%s"' % remote
1018 def identify_remote(branchname):
1019 """Return the name for the remote to pull the given branchname
1020 from, or None if we believe it is a local branch.
1023 for remote in remotes_list():
1024 if branchname in remotes_local_branches(remote):
1027 # if we get here we've found nothing, the branch is a local one
1031 """Return the git id for the tip of the parent branch as left by
1036 stream = open(os.path.join(basedir.get(), 'FETCH_HEAD'), "r")
1038 # Only consider lines not tagged not-for-merge
1039 m = re.match('^([^\t]*)\t\t', line)
1042 raise GitException, 'StGit does not support multiple FETCH_HEAD'
1044 fetch_head=m.group(1)
1048 out.warn('No for-merge remote head found in FETCH_HEAD')
1050 # here we are sure to have a single fetch_head
1054 """Return a list of all refs in the current repository.
1057 return [line.split()[1] for line in GRun('git-show-ref').output_lines()]