Make {load,write}_config(filename=None) implement the standard behavior

Make the previously obligatory 'filename' argument to load_config() and
write_config() default to None, and have that implement the behavior
you'd usually want: read/write either KCONFIG_CONFIG or ".config" if
unset, and read the 'option defconfig_list' configuration file if
KCONFIG_CONFIG/".config" doesn't exist.

For load_config(), filename=None also allows the configuration file to
be missing without raising an error. load_config() returns True if a
local configuration file was loaded, which is useful to check in the
menuconfig (if no local configuration file exists, we always want to
prompt for saving the configuration when exiting).

Also add a 'verbose' argument (default True) to load_config() and
read_config() that makes them print which files were read/written in
filename=None mode.

Also generalize olddefconfig.py and oldconfig.py to not require there to
already be a local configuration file. This was a bit silly for
olddefconfig.py in particular.

Remove the examples/defconfig.py script. It's a duplicate of
olddefconfig.py.

1 files changed, 0 insertions, 2 deletions

diff --git a/README.rst b/README.rst
index ef947be..11a85e9 100644
--- a/README.rst
+++ b/README.rst
@@ -492,8 +492,6 @@ Example scripts
 
 The `examples/ <https://github.com/ulfalizer/Kconfiglib/blob/master/examples>`_ directory contains some simple example scripts. Among these are the following ones. Make sure you run them with the latest version of Kconfiglib, as they might make use of newly added features.
 
-- `defconfig.py <https://github.com/ulfalizer/Kconfiglib/blob/master/examples/defconfig.py>`_ has the same effect as going into ``make menuconfig`` and immediately saving and exiting.
-
 - `eval_expr.py <https://github.com/ulfalizer/Kconfiglib/blob/master/examples/eval_expr.py>`_ evaluates an expression in the context of a configuration.
 
 - `find_symbol.py <https://github.com/ulfalizer/Kconfiglib/blob/master/examples/find_symbol.py>`_ searches through expressions to find references to a symbol, also printing a "backtrace" with parents for each reference found.