[Doc]Put the return of the split filter in a variable
minor #1413 [Doc]Put the return of the split filter in a variable (n1c01a5)

This PR was squashed before being merged into the 1.15-dev branch (closes #1413).

Discussion
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[Doc]Put the return of the split filter in a variable

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0e228c7 [Doc]Put the return of the split filter in a variable