omni-compl: start completion in a full keyword #4187
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The default
omni_start_map
is too restrictive for Lisps and Schemeslike Racket, which permit hyphens (among other special characters).
As recorded in #3870, trying to complete
file-name-from-path
whentyping
file-name<C-x><C-o>
would give completions likenamespace
because the hyphen is ignored to find the start of the word for
completion.
Now the default searches for the start using the keyword class
\k
, which is more precise and configurable for each filetype withoutmodifying the source.