Have you ever been annoyed by having to re-type a file you are looking for, just because the filename contains capital letter(s)?
Tab-completion can get you closer to the correct filename without knowing what the actual filename is, but it’s not quite smart enough to account for uppercase and lowercase letters (i.e. it’s case-sensitive).
For example, if you type coolfile and hit tab to complete the filename coolFile.txt, tab-completion won’t work.
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