Use the Javascript split() function with a Positive Lookbehind Regular Expression to split a string while preserving the separators in the sub-strings:
split(/(?<=[<separator characters go here>])/)
What is Lookbehind? §
Lookbehind in regular-expression allows to match a pattern only when it follows the given lookbehind pattern (without actually matching it).
Syntax §
- Positive lookbehind:
(?<=Y)Xmatches X if there is Y before it. - Negative lookbehind:
(?<!Y)Xmatches X if there is no Y before it.
One limitation is that Javascript only supports fixed length lookbehind patterns. So, you cannot use it to split by a separator pattern with variable length.
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