get_maintainer: remove stray punctuation when cleaning file emails

When parsing emails from .yaml files in particular, stray punctuation
such as a leading '-' can end up in the name.  For example, consider a
common YAML section such as:

  maintainers:
    - [email protected]

This would previously be processed by get_maintainer.pl as:

  - <[email protected]>

Make the logic in clean_file_emails more robust by deleting any
sub-names which consist of common single punctuation marks before
proceeding to the best-effort name extraction logic.  The output is then
correct:

  [email protected]

Some additional comments are added to the function to make things
clearer to future readers.

Link: https://lore.kernel.org/all/[email protected]/
Suggested-by: Joe Perches <[email protected]>
Signed-off-by: Alvin Šipraga <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions