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Indent settings for atom-beautify with uncrustify for C/C++?

Where can the indent settings (tab width) be set for uncrustify run by the Atom package atom-beautify (on Windows)? While the package settings offer to specify a path for an uncrustify config file (separately for C and C++), I can't figure out where the default settings come from.

Solution

  • The package directory is

    • Windows: C:\Users\<user>\.atom\packages\atom-beautify\src\beautifiers\uncrustify

    Uncrustify is run via index.coffee, resulting in arguments like:

    C:\uncrustify\uncrustify.exe
-c
C:\Users\<user>\AppData\Local\Temp\.....cfg
-f
C:\Users\<user>\AppData\Local\Temp\input...
-o
C:\Users\<user>\AppData\Local\Temp\output...
-l
CPP

    If no path is configured in settings, it generates a temporary config via cfg.coffee. It may just look like

    indent_with_tabs = 0
output_tab_size = 2
input_tab_size = 2

    This may not be enough for uncrustify to modify the source as intended. I am not sure from where these settings originate (Atom Editor Settings?). So I just modified default.cfg in the package directory (reduce tab width to 4, spaces for tabs -- not sure which parameter did it), added that to the settings, et voila...