Convert with plugin line to xerces

[markus2330]

I tried to convert a snippet on the website, but got the error: CONVERT_UNABLE_TO_CONVERT_SNIPPET

Used plugins

Input:
- Plugin: line
- Format: line
- Additional config: 
Output:
- Plugin: xerces
- Format: xml
- Additional config: 

Input configuration

a
b

Last output configuration

Additional information

[e1528532]

I checked how the line plugin saves its content, and apparently it saves the input as an array of lines, so if we assume user/test/line as the basis, we get user/test/line/#0 =a and user/test/line/#1=b. In XML this would naturally mean that there are two elements called line, so it would correspond to

<line/>
<line/>

but as line is the root element in this case, and there can be only one root, this is currently incompatible with the xerces plugin. I'd have to create a workaround to treat the root element differently in case its an array, but I'm not sure if this is a good idea to do. The data represented here is just not naturally suited to the xml format due to several root elements.

I found out this always happens with the line plugin because even if there is only 1 line it saves it as an array. If you think it makes sense i can make a workaround that allows arrays with 1 element as being the root key for the export.

If we decide to leave it like it is, i'd add this hint to the limitations of the readme though.

[markus2330]

Yes, leave like it is. Please document the limitation and also link here.

We could extend the rename plugin to introduce root elements in such cases.

[e1528532]

updated documentation including link to here in #1450