#15223: Let the `TestSuite` test that the construction of a parent returns the
parent
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Reporter: SimonKing | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.1
Component: coercion | Resolution:
Keywords: construction | Merged in:
functor, test suite, sd53 | Reviewers:
Authors: Simon King | Work issues:
Report Upstream: N/A | Commit:
Branch: | 7a24de6caa6abad9218c6186030787871c070905
u/SimonKing/ticket/15223 | Stopgaps:
Dependencies: #15229 |
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Comment (by mmezzarobba):
Replying to [comment:51 SimonKing]:
> Thank you! Can you briefly explain to me the differences between
`^HEAD`, `HEAD^` and `HEAD~`? I keep forgetting what is what.
The last two specify revisions (commits): `rev^k` is the `k`-th parent of
`rev`; `rev~k` is the grand^`k`^-first-parent of `rev`; `rev^` and `rev~`
are shorthands `rev^1` == `rev~1`.
`^rev` is something different: it is used to specify lower bounds of
ranges of revisions. For example, `rev1 rev2 ^rev3` is the set of all
ancestors of `rev1` or `rev2` that are not ancestors of `rev3`.
See `git help revisions` for the full syntax of revision specifications.
--
Ticket URL: <http://trac.sagemath.org/ticket/15223#comment:52>
Sage <http://www.sagemath.org>
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