git在提交消息中说'重写'或'重命名'是什么意思？ [英] What does it mean when git says 'rewrite' or 'rename' in a commit message?

问题描述

运行 git commit 会导致以下输出：

Running a git commit leads to the following output:

[manu@host] git: git commit -a -m "StreamIt instrumentation"
[master 263410f] StreamIt instrumentation
62 files changed, 6117 insertions(+), 5748 deletions(-)
rewrite Code/ALCHEMY/streamit-src-2.1.1/src/at/dms/kjc/cluster/ClusterBackend.java (91%)
rewrite Code/ALCHEMY/streamit-src-2.1.1/src/at/dms/kjc/cluster/ClusterCodeGenerator.java (95%)
rewrite Code/ALCHEMY/streamit-src-2.1.1/src/at/dms/kjc/cluster/code/FlatIRToCluster.java (94%)
rewrite Code/ALCHEMY/streamit-src-2.1.1/src/at/dms/kjc/common/ToCCommon.java (92%)
rewrite Code/ALCHEMY/streamit-src-2.1.1/src/at/dms/kjc/flatgraph/ScheduledStaticStreamGraph.java (93%)
rename Code/ALCHEMY/streamit-src-2.1.1/src/at/dms/kjc/sir/lowering/fission/{StatelessDuplicate.java => HorizontalFission.java} (98%)
rewrite Code/ALCHEMY/streamit-src-2.1.1/src/at/dms/kjc/sir/lowering/partition/dynamicprog/DynamicProgPartitioner.java (93%)

• 当git报告文件为'rewrite'时，git是什么意思？


• 关联百分比的含义是什么？


• 为什么只有在这个提交中更改的62个关联的百分比？
li>

• What does git mean when it reports a file as 'rewrite'?
• What is the meaning of the associated percentage?
• Why is a percentage only associated with these lines among the 62 changed in this commit?

推荐答案

Git使用启发式来确定更改是重命名还是复制文件，如果它是对文件的重写。粗略地说，如果旧版本和新版本之间的差异大于新版本本身，则是重写。

Git uses heuristics to determine if a change was a renaming or copying of a file, and also if it is a "rewriting" of the file. Roughly speaking, if the diff between the old and new version is bigger than the new version itself, it's a "rewrite".

这是针对git的原始用例更改源文件，通常会进行本地化更改：由于它基于逐行比较，因此重新注入源文件等内容可能会触发它。此外，由于它是即时确定的，所以diff选项（如-b和-w）可以改变评估改变是否为重写（或复制或重命名）。

This is tuned for git's original use case of changing source files, most often making localised changes: since it is based on a line-by-line diff, things like reindenting a source file can trigger it. Also, since it is determined on-the-fly, diff options like "-b" and "-w" can change the evaluation of whether a change is a rewrite (or a copy, or a rename).

百分比是git的不相似性指数（与重命名或复制的相似性指数百分比相反）。可能类似于文件中已更改行数的百分比。

The percentage is git's "dissimilarity index" (as opposed to the percentage "similarity index" for a rename or copy). Probably something like the percentage of lines in the file that have changed.

这篇关于git在提交消息中说'重写'或'重命名'是什么意思？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！