created: 20150126142522000
modified: 20150221193759000
tags: [[Filter Operators]] [[String Operators]]
title: splitbefore Operator
type: text/vnd.tiddlywiki
caption: splitbefore
op-purpose: select a delimited prefix from each input title
op-input: a [[selection of titles|Title Selection]]
op-parameter: a string of characters marking the end of the prefix
op-parameter-name: S
op-output: the prefix, up to and including <<.place S>>, of each input title

Each input title is processed in turn.

* A title that contains <<.place S>> contributes everything up to and including <<.place S>>.
* A title that doesn't contain <<.place S>> simply contributes itself to the output.

Contributions are [[dominantly appended|Dominant Append]] to the output.

The [[table-of-contents macros|Table-of-Contents Macros]] use this operator with `/` as the parameter.

<<.operator-examples "splitbefore">>