Suggest `foo --help` instead. However, if there are man pages, suggest
`foo --help` after `man 2/3 foo`
This addresses the comment in the previous commit message:
> However, in cases where multiple sections have man pages for `foo`,
> running `man foo` could bring up the "wrong" section of man pages.
> `man read` is an example of this, but that should probably be handled in
> a way that still suggests `foo --help` first when there are *no* man
> pages for `foo` in any section.
`man` without a section searches all sections, so having `foo --help`
suggested first makes more sense than adding a specific section. See
https://github.com/nvbn/thefuck/pull/562#issuecomment-251142710
However, in cases where multiple sections have man pages for `foo`,
running `man foo` could bring up the "wrong" section of man pages.
`man read` is an example of this, but that should probably be handled in
a way that still suggests `foo --help` first when there are *no* man
pages for `foo` in any section.
Closes https://github.com/nvbn/thefuck/issues/546
This is along the lines of what @waldyrious suggested in
https://github.com/nvbn/thefuck/issues/546, but it just adds a new
suggestion rather than replacing the other ones.
