Added -sync flag to handle synctex

pdflatex.sh

@@ -140,6 +140,7 @@ ${txtbld}Options${txtrst}:
   -2x2 FILE            put four pages of the PDF FILE on a single A4 sheet
                        (the output will be in FILE-nup.pdf file)
   +3                   run latex/pdflatex thrice (default is twice)
+  -sync                append -synctex=1 to pdflatex command
   +b                   make also bibtex
   -b   FILE            make ONLY bibtex
   -c   FILE            cleanup (remove auxiliary files)
@@ -359,7 +360,7 @@ function spell_checker() {
 # Runs (pdf)latex
 function run_pdflatex() {
   echo -ne "$TEXT..."
-  $LATEX_PROGRAM $LATEX_BATCHMODE_OPT "$FILENAME" >&- 2>&-
+  $LATEX_PROGRAM $SYNCTEXFLAG $LATEX_BATCHMODE_OPT "$FILENAME" >&- 2>&-
   local ERR=`grep -i error "$FILENAME".log`
   if [[ -n $ERR ]] ; then
     echo -ne "\t\t\t\t${txtred}[done]"
@@ -384,6 +385,7 @@ while [[ -n $1 ]] ; do
     -2x1)   pdf_manipulation "2x1" "$2" ; exit 0 ;;
     -2x2)   pdf_manipulation "2x2" "$2" ; exit 0 ;;
     +3)     THRICE="2" ; shift ;;
+    -sync)  SYNCTEXFLAG="-synctex=1" ; shift ;;
     +b)     MAKEBIBTEXARG="yes" ; shift ;;
     -b)     MAKEONLYBIBTEXARG="yes" ; shift ; break ;;
     -c)     AUXILIARYEXTS="$AUXILIARYEXTS log dvi" ; cleanup "$2"; exit 0 ;;