ENH - implemented keepcfg and keepprevious in ft_default

ft_defaults.m

@@ -100,6 +100,8 @@
 if ~isfield(ft_default, 'checksize'), ft_default.checksize = 1e5; end % number in bytes, can be inf
 if ~isfield(ft_default, 'showlogo'), ft_default.showlogo = 'yes'; end % yes or no, this is relevant for SPM and EEGLAB
 if ~isfield(ft_default, 'showcallinfo'), ft_default.showcallinfo = 'yes'; end % yes or no, this is used in ft_pre/postamble_provenance
+if ~isfield(ft_default, 'keepprevious'), ft_default.keepprevious = 'yes'; end % yes, no, this is used in ft_postamble_previous
+if ~isfield(ft_default, 'keepcfg'), ft_default.keepcfg = 'yes'; end % yes, no, this is used in ft_postamble_history
 if ~isfield(ft_default, 'debug'), ft_default.debug = 'no'; end % no, save, saveonerror, display, displayonerror, this is used in ft_pre/postamble_debug
 if ~isfield(ft_default, 'outputfilepresent'), ft_default.outputfilepresent = 'overwrite'; end % can be keep, overwrite, error
 

utilities/private/ft_postamble_history.m

@@ -27,6 +27,11 @@
 %
 % $Id$
 
+if isfield(cfg, 'keepcfg') && ~istrue(cfg.keepcfg)
+ % do not keep the configuration in the output
+ return
+end
+
 % large fields should be removed in the output configuration
 cfg = ft_checkconfig(cfg, 'checksize', 'yes');
 

utilities/private/ft_postamble_previous.m

@@ -28,6 +28,11 @@
 %
 % $Id$
 
+if isfield(cfg, 'keepprevious') && ~istrue(cfg.keepprevious)
+ % do not keep the previous configuration in the output
+ return
+end
+
 % remember the cfg history of the input data structures
 cfg.previous = {};
 cnt = 0;