[Github-comments] [geany/geany] Unknown -W option to cc in HACKING (#1477)

[Vasiliy Faronov]

The [HACKING](https://github.com/geany/geany/blob/master/HACKING) file has this:

> Enable warnings - for gcc use '-Wall -W'

I can’t find the documentation for a `-W` [option to gcc](https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/Option-Summary.html). Am I missing something, or was this intended to be a specific `-Wsomething`?

Cc @ntrel as he [wrote that originally](https://github.com/geany/geany/commit/51dc7f08b461d51973800c4e3c01d658d433e866).

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