Change debug mode (yes|no) to debug level 0, 1 or 2

Default is zero, can be changed via command line parameter --debug=[0|1|2].

1_options_temp.gms

@@ -14,7 +14,7 @@ solvelink = %Solvelink.Loadlibrary%  // Solvelink controls how the problem is pa
 
 threads = -1          // How many cores the solver can use: 0 = all cores; negative values = all cores - n
 
-$ifi not '%debug%' == 'yes'
+$ife not %debug%>1
     solprint = Silent  // Controls solution file outputs - debug mode will be more verbose
 ;
 

Backbone.gms

@@ -33,10 +33,11 @@ Created by:
 
 GAMS command line arguments
 
---debug=[yes|no]
-    Switch on/off debugging mode. In debug mode, writes debug.gdx
-    with all symbols as well as a gdx file for each solution containing
-    model parameters, variables and equations.
+--debug=[0|1|2]
+    Set level of debugging information. Default is 0 when no extra information is
+    saved or displayded. At level 1, file 'debug.gdx' containing all GAMS symbols
+    is written at the end of execution. At level 2, debug information is written
+    for each solve separately.
 
 --diag=[yes|no]
     Switch on/off diagnostics. Writes some additional diagnostic results in
@@ -66,6 +67,9 @@ References
 ==========================================================================
 $offtext
 
+* Set default debugging level
+$if not set debug $setglobal debug 0
+
 * Default values for input and output dir
 $if not set input_dir $setglobal input_dir 'input'
 $if not set output_dir $setglobal output_dir 'output'
@@ -129,7 +133,7 @@ $iftheni.dummy not %dummy% == 'yes'
     $$include 'inc/3f_afterSolve.gms'           // Post-processing variables after the solve
     $$include 'inc/4a_outputVariant.gms'        // Store results from the loop
 $endif.dummy
-$iftheni.debug '%debug%' == 'yes'
+$ifthene.debug %debug%>1
         putclose gdx;
         put_utility 'gdxout' / '%output_dir%/' mSolve.tl:0 '-' tSolve.tl:0 '.gdx';
             execute_unload
@@ -155,7 +159,7 @@ execute_unload '%output_dir%/results.gdx',
     $$include 'defOutput/resultSymbols.inc'
 ;
 
-$ifi '%debug%' == 'yes'
+$ife %debug%>0
 execute_unload '%output_dir%/debug.gdx';
 
 if(errorcount > 0, abort errorcount);

CHANGELOG.md

@@ -15,6 +15,9 @@ All notable changes to this project will be documented in this file.
 ### Changed
 - Automatic calculation of parameter `dt_circular` takes into account time steps 
   only from `t000001` onwards.
+- Debug mode yes/no changed to debug levels 0, 1 or 2. With higher level produces
+  more information. Default is 0, when no extra files are written (not even *debug.gdx*).
+  Set debug level with command line parameter `--debug=LEVEL`.
 
 ### Fixed
 - Calculation of parameter `df_central`

inc/3b_periodicLoop.gms

@@ -20,7 +20,7 @@ $offtext
 * =============================================================================
 
 // This is only done if debug mode is not specifically enabled
-$iftheni.debug NOT '%debug%' == 'yes'
+$ifthene.debug not %debug%>0
 
 * --- Variables ---------------------------------------------------------------
 

inc/scenred.gms

@@ -12,7 +12,7 @@ ScenRedParms('scen_red') = 1;  // Reduce scenarios
 ScenRedParms('tree_con') = 0;  // No tree construction
 *ScenRedParms('report_level') = 2;
 ScenRedParms('run_time_limit') = 30;
-$ifthen %debug% == 'yes'
+$ifthene %debug%>1
 ScenRedParms('visual_init') = 1;
 ScenRedParms('visual_red') = 1;
 $endif