[build,src,doc] Modify get_version.sh to deal better with whitespace …

…(avoid space in version); minor fixes (kaldi-asr#1526)

src/base/get_version.sh

@@ -54,20 +54,20 @@ elif [ "$(git rev-parse --is-inside-work-tree 2>/dev/null)" != true ]; then
   echo "$0: Using the version number \"$version\" specified in src/.version."
 else
   # Figure out patch number.
-  version_commit=$(git log -1 --pretty=oneline ../.version | cut -f 1 -d ' ')
-  patch_number=$(git rev-list ${version_commit}..HEAD | wc -l)
+  version_commit=$(git log -1 --pretty=oneline ../.version | awk '{print $1}')
+  patch_number=$(git rev-list ${version_commit}..HEAD | wc -l | awk '{print $1}')
   version="$version.$patch_number"
 
   # Check for uncommitted changes in src/.
-  uncommitted_changes=$(git diff-index HEAD -- .. | wc -l)
+  uncommitted_changes=$(git diff-index HEAD -- .. | wc -l | awk '{print $1}')
   if [ $uncommitted_changes -gt 0 ]; then
     # Add suffix ~N if there are N files in src/ with uncommitted changes
     version="$version~$uncommitted_changes"
   fi
 
   # Figure out HEAD commit SHA-1.
-  head_commit=$(git log -1 --pretty=oneline | cut -f 1 -d ' ')
-  head_commit_short=$(git log -1 --oneline --abbrev=4 | cut -f 1 -d ' ')
+  head_commit=$(git log -1 --pretty=oneline | awk '{print $1}')
+  head_commit_short=$(git log -1 --oneline --abbrev=4 | awk '{print $1}')
   version="$version-${head_commit_short}"
 fi
 

src/chain/chain-training.cc

@@ -30,7 +30,7 @@ void ComputeChainObjfAndDeriv(const ChainTrainingOptions &opts,
                               const Supervision &supervision,
                               const CuMatrixBase<BaseFloat> &nnet_output,
                               BaseFloat *objf,
-                              BaseFloat *l2_term,                              
+                              BaseFloat *l2_term,
                               BaseFloat *weight,
                               CuMatrixBase<BaseFloat> *nnet_output_deriv,
                               CuMatrixBase<BaseFloat> *xent_output_deriv) {
@@ -86,7 +86,7 @@ void ComputeChainObjfAndDeriv(const ChainTrainingOptions &opts,
   // for different frames of the sequences.  As expected, they are
   // smaller towards the edges of the sequences (due to the penalization
   // of 'incorrect' pdf-ids.
-  if (GetVerboseLevel() >= 1) {
+  if (GetVerboseLevel() >= 1 && nnet_output_deriv != NULL) {
     int32 tot_frames = nnet_output_deriv->NumRows(),
  frames_per_sequence = supervision.frames_per_sequence,
        num_sequences = supervision.num_sequences;