Bangla has lost the old length distinctions; I suspect some other Eastern Indo-Aryan languages too. There is a good phonological survey by Pramod Kumar Pandey that may offer more information. Unfortunately the reference is not available to me
right now. Google might help
On Mar 3, 2022, at 09:11, Harry Spier via INDOLOGY <firstname.lastname@example.org> wrote:
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Dear list members,
I was asked if all Indian languages (North and South) have vowels differentiated by length.