Output error if step_config fails

Small enhancement of the template

sequencer/sequencer.sh

@@ -9,7 +9,7 @@
 
 VERSION_REV=12
 VERSION_MAJOR=2
-VERSION_MINOR=0
+VERSION_MINOR=1
 
 ## Start of generic script part
 
@@ -816,11 +816,13 @@ CONFIG_FILE_NAME="\${SCRIPT_NAME}.cfg"
 CONFIG_FILE_TEMPLATE="\$WDIR/\${CONFIG_FILE_NAME}.example"
 
 step_config() {
-  echo "Called once before executing steps."
+  ## Called once before executing steps.
   ## e.g. to source a config file manually:
   #. "\$CONFIG_FILE"
+  
   ## or to use sequencer api with global config file:
   #initSeqConfig "\$CONFIG_FILE_NAME" "\$CONFIG_FILE_TEMPLATE"
+  
   ## or to use sequencer api with profile config file support:
   #initSeqConfig -p "\$SCRIPT_NAME" "\$CONFIG_FILE_TEMPLATE"
   #if [ \$? -eq 0 ] ; then
@@ -829,7 +831,11 @@ step_config() {
   #  # End if no configuration file exists
   #  [ \$DRY -eq 0 ] && return -1
   #fi
-  #[ \$QUIET -ne 0 ] && APTOPT="-y"
+
+  ## Apt cmdline option to suppress user interaction
+  [ \$QUIET -ne 0 ] && APTOPT="-y"
+
+  ## Return of non zero value will abort the sequence
   return 0
 }
 
@@ -1101,7 +1107,7 @@ main() {
 
   parseAlias
 
-  # run configuration for seq only if available and if first step is valid
+  # run configuration for sequence only if available and if first step is valid
   existsFunction step_config
   if [ $? -eq 0 ] ; then
     if [ $SEQ_CONFIG_EDIT -ne 0 ] ; then
@@ -1112,9 +1118,12 @@ main() {
     fi
     checkStep "${START[0]}"
     if [ $? -ne 0 ] ; then
-      if [ $QUIET -ne 2 ] ; then echo " [I] Configuring sequence (step_config) ..." ; fi
+      echoseq " [I] Configuring sequence (step_config)"
       step_config "${STEP_ARGS[@]}"
-      [ $? -ne 0 ] && exit 1
+      if [ $? -ne 0 ]; then
+        echoerr " [E] Configuring sequence failed"
+        exit 1
+      fi
     else
       return 1
     fi