GVim on Windows 7 - open file sets default suffix, want all suffixes

Question

In GVim running on Windows 10, when I open a file, the displayed files are limited to the suffix of the file currently being editted, e.g., "C Source Files (*.c)". I can change the pull down to "All Files (.)" but this is cumbersome.

In particular I edit Verilog (*.v) and System Verilog (*.sv). I'd like to skip the step where I have to select from the pull down to All Files. It's rather cumbersome.

The Mac version of GVim (mvim) shows all files and doesn't try to "help" you.

Any ideas?

[Edit] Thanks for the comments. Adding the following in _gvimrc works.
let b:browsefilter = "All files (.)\t*.*\n"

Answer 1

When using the graphical versions of the open dialog (e.g. using :browse :e command), vim will try to be clever and apply a filetype filter depending on your current filetype. So for a C file, it provides filter to only show C source files (*.c, *.cpp) , or header files (*.h) or a couple of other ones.

What Vim considers to be grouped together and shown to you in that dialog, can be customized by the browsefilter variable:

For MS Windows and GTK, you can modify the filters that are used in the browse dialog. By setting the g:browsefilter or b:browsefilter variables, you can change the filters globally or locally to the buffer. The variable is set to a string in the format "{filter label}\t{pattern};{pattern}\n" where {filter label} is the text that appears in the "Files of Type" comboBox, and {pattern} is the pattern which filters the filenames. Several patterns can be given, separated by ';'.

If you want to disable this behavior, you can just empty the buffer-local variable b:browsefilter:

:unlet! b:browsefilter

This could be done in an after-filetype plugin, e.g. for C filetype, add this line to a file called ~/.vim/after/ftplugin/c.vim (create non-existing directories). See e.g. :h ftplugin-overrule, if you only want this for very few specific filetypes. If you want to globally disable it, you could use e.g. an BufEnter autocommand (or similar ones).