Github user corneadoug commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/806#issuecomment-208200553
@mwkang
I found 2 problems:
1) Content of the first line is copied instead of interpreter sign only,
for example:
```
%md hello
```
Will copy `%md hello` to the new paragraph, instead of `%md `
2) Default interpreter is not copied
If you type code using the default interpreter, it will add the previous
paragraph interpreter sign instead.
So If you have:
#### Paragraph 1
```
%md
hello
```
#### Paragraph 2
```
println("Hello")
```
The new paragraph will have `%md`
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