Unexpected behaviour of YAML decoder

[glyn]

I tried using the API machinery YAML utility to split a stream of YAML documents into individual documents. It doesn’t seem to cope with certain cases and I am wondering if that was intentional, a restriction, or what.

In particular, directives don't appear to be grouped with the document they apply to. For example:

%YAML 1.2
---
a: b
...
%YAML 1.2
---
c: d

splits into three documents instead of two:

%YAML 1.2

a: b
...
%YAML 1.2

c: d

See the code here which reproduces the above: https://play.golang.org/p/fgqRm_16LJV.

There are also small issues around when newlines are preserved.

Ideally, NewDocumentDecoder should satisfy these properties:

• each document produced should be a valid YAML document consisting of a substring of the input string
• when the documents produced are concatenated together, the resultant string should be equal to the input string

Here is some code and a test which pins down the unexpected behaviour a bit better: split.go.txt,split_test.go.txt. (I added the .txt to the filenames since I couldn't attach .go files.)

[dims]

fyi kubernetes/kubernetes#34146

also this repo is not really watched as this is bot generated/updated repo. please use kubernetes/kubernetes

[glyn]

fyi kubernetes/kubernetes#34146

That's pretty revealing. Thanks.

also this repo is not really watched as this is bot generated/updated repo. please use kubernetes/kubernetes

Moved to kubernetes/kubernetes#89764