Posts about Australian English
My native dialect is Australian English, and I neutralise the FLEECE and NEAR vowels before /l/, so that mealy and merely are both [ˈmɪə.liː] ~ [ˈmɪː.lɪi]. It seems to be common enough that Sealy mattresses in Australia use the rhyming slogan "Clearly a Sealy", and this piece of merch for the Australian kids' show Bluey misspells "Heeler" as *"Heerler" (this one might just be an errant keystroke, but it's definitely weird).
Despite how common it seems to be, I can't find any reference to it as a merger. This 2021 paper looks into various pre-/l/ mergers (including the similar "feel-fill" merger), but only looks at closed /CVl/ syllables; since there are no <eerl> words in English, the NEAR vowel isn't even part of their study. Wikipedia also briefly mentions "The vowel /iː/ has an onset [ɪi̯], except before laterals."
Have I missed something, or is my "mealy-merely" merger undocumented?