Poland has an official, somewhat manual version of this - the ISAP system.

Actual bills are written in the form of patches ("§1. In the law X paragraph 5, the words "such and such" are replaced with "this and that". §2. The law X paragraph 4 is striked. §3. After law X paragraph 8, a new paragraph 8a is added that says "etc. and so on".)

After a patch or a collection of patches are passed, they are combined together and a unified version of the law is published. These documents aren't technically the law, they just show a snapshot of what the law is at the specific moment.

ISAP system is an online collection of all bills that were passed, plus crosslinks between laws that change/supercede/otherwise interact with each other, plus current and archival unified versions, plus related administrative orders and other miscellanious documents. Makes looking up laws and changes to laws very easy.

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sam_lowry_ 5 hours ago | parent [-]

It's the European law, inspired mostly by French, IIRC. Belgium has the same, for instance.

	▲	Xirdus 4 hours ago \| parent [-]
		I mostly meant the web app. Forgot to link it. https://isap.sejm.gov.pl/isap.nsf/home.xsp Unfortunately it's only in Polish. Example page for the traffic code https://isap.sejm.gov.pl/isap.nsf/DocDetails.xsp?id=WDU19970... First PDF is the original, second PDF is the unified version, then there's links - 4 others changed, 4 explicitly obsoleted, 12 implicitly obsolete, 707 administrative orders, 12 Constitutional Tribunal rulings, 11 previous + current unified versions, 212 patches, 14 relevant EU directives.