The documentation states that a `sync-c` attribute in the manifest file
can set a default for whether only the current branch should be fetched
or all branches. This seems to have been broken for some time.
Commit 7356114 introduced the `--no-current-branch` CLI option and
relied on getting `None` via `optparse` if neither `--current-branch`
nor `--no-current-branch` was set to distinguish it from a boolean
value. If `None` was received, it would read the value from the manifest
option `sync-c`. The parsing went through the utility function
`_GetCurrentBranchOnly` which returned `True` if `--current-branch` had
been given on the command-line, or fell back on the "superproject"
setting, which would either return `True` or `None`. This would
incorrectly make `repo` fall back to the manifest setting even if the
user had given `--no-current-branch` if no superproject was requested --
the manifest became "too powerful":
Command-line Using superproject → `current_branch_only`
------------ ------------------ -----------------------
No From manifest
Yes True
--current-branch No True
--current-branch Yes True
--no-current-branch No From manifest ← wrong
--no-current-branch Yes True
In commit 0cb6e92 the superproject configuration value reading changed
from something that could return `None` to something that always
returned a boolean. If it returned `False`, this would then incorrectly
make `repo` ignore the manifest option even if neither
`--current-branch` nor `--no-current-branch` had been given. The
manifest default became useless:
Command-line Using superproject → `current_branch_only`
------------ ------------------ -----------------------
No False ← wrong
Yes True
--current-branch No True
--current-branch Yes True
--no-current-branch No False
--no-current-branch Yes True
By swapping the order in which the command-line option target and the
superproject setting is evaluated, things should work as documented:
Command-line Using superproject → `current_branch_only`
------------ ------------------ -----------------------
No From manifest
Yes True
--current-branch No True
--current-branch Yes True
--no-current-branch No False
--no-current-branch Yes True
Change-Id: I933c232d2fbecc6b9bdc364ebac181798bce9175
Tested-by: Daniel Andersson <daniel.r.andersson@volvocars.com>
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/334270
Reviewed-by: Mike Frysinger <vapier@google.com>
