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#: ↳ {{#invoke:string|replace||^.*$|Hello|1|false}}
--[[User:Grufo|Grufo]] ([[User talk:Grufo|talk]]) 10:47, 12 July 2025 (UTC)
:Because of [[Module:String#L-402--L-404|lines 402–404]]. The reasoning for that code is not, so far as I can tell, documented. There is similar code, also not documented, in <code>find()</code> but that code makes some sort of sense – find anything in an empty string should return <code>0</code>. Makes me wonder if <code>replace()</code> was created after <code>find()</code> and used <code>find()</code> as an armature upon which to construct <code>replace()</code>. Seems to me that [[Module:String#L-402|line 402]] could be rewritten as: <syntaxhighlight lang="lua" inline="1">if '' == pattern then</syntaxhighlight>. But, are there any templates out there that rely on this anomaly?
:—[[User:Trappist the monk|Trappist the monk]] ([[User talk:Trappist the monk|talk]]) 13:24, 12 July 2025 (UTC)
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