Find with Regex, and specific Path

Question

Trying to find a list of files from a set variable. However the path needs to be specific.

filename=part-of-filename

Does not work:

find $HOME -regextype posix-extended -type f -regex "$filename-[[:digit:]]{4}-connect\.xml"

Also does not work:

find $HOME -regextype posix-extended -type f -regex "$filename-[[:digit:]]{4}-connect\.xml"

Works, but finds too much. Why is it forcing me to use '.*/'? $HOME is completely ignored here.

find $HOME -regextype posix-extended -type f -regex ".*/$filename-[[:digit:]]{4}-connect\.xml"

Answer 1

Why is it forcing me to use '.*/'?

From find documentation:

-regex pattern
File name matches regular expression pattern. This is a match on the whole path, not a search. For example, to match a file named ./fubar3, you can use the regular expression .*bar. or .*b.*3, but not f.*r3.