When writing dialogue for characters that stammer or stutter over the first letter of the first word in their speech, should the first letter remain a capital or become lowercase when repeated?
My question is probably best explained by example...
Retaining capital letter:
"H-H-Hello," he said.
Not retaining capital letter:
"H-h-hello," he said.
Which is correct, or are both acceptable? I wasn't able to find any solid information either way so I thought a discussion could be had in the hopes of reaching a concrete conclusion.
To be entirely clear, I'm only asking about stammering over the first letter and when that first letter should be a capital.