Disable ALL bold font in gvim on windows ?

Hi, All

Is there a simply way to get all bold font disappeared (gvim under windows ) ?

Having searched a lot for solutions, I found NONE of them can actually work.

solution 1:  make a copy of colorscheme file & modify it remove 'gui=bold' attribute.

problem: keyword 'bold' just cannot be found in my colorscheme: seoul256.vim

solution 2: set guifont manually without 'b' attribute

problem: guifont has been set to "fixedsys" without the 'b' and still no use.

solution 3: modify syntax files

problem: too many syntax files need to be edit, and I am trying to avoid modifying runtime files directly.

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See ? bold font is really ugly with fixedsys.

my setting is:

set guifont=fixedsys

color seoul256

url of seoul256 is: https://github.com/junegunn/seoul256.vim 

gvim version: 7.4.2028

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I have searched almost a whole day for solutions, 

don't want to waste everyone's time if I can solve it myself

And at last, I just can't get any idea now, but ask for help in this mailling list

any other solutions ?

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skywind3000@163.com