Problem:

s_string uses --mode=ccpp (C/C++ comment parser) for all files including .yml. .yml uses # comments, not /* */ or //, so comment typos in .yml files are not caught. This is also a problem if we decide to spell check more files e.g. python files or markdown files.

Context:

WT-17032 highlighted odd behaviour where two .yml files of identical content but different ordering flagged the spell checker. This is not intended behaviour.

Definition of Done:

• s_string uses the correct aspell mode based on the file extension
• New file types can be added easily
• New whitelist words surfaced by correct YAML checking are added to s_string.ok