Bump synctex to 1.21

  $ cd cut-n-paste/synctex
  $ rm synctex_*
  $ ./update-synctex-from-TL.sh

Test on Fedora:

  1. Install required packages
     $ sudo dnf install texlive-scheme-basic texlive-lipsum -y

  2. Build a pdf with synctex enabled
     $ cat <<EOF >> file.tex
\documentclass[12pt]{report}
\usepackage{lipsum}
\begin{document}
\chapter{Introduction}
\lipsum[2-4]
\end{document}
EOF
     $ pdflatex -synctex=1 file.tex

   3. Open file.pdf using atril

   4. Search any text string

1 files changed, 414 insertions, 348 deletions

diff --git a/cut-n-paste/synctex/synctex_parser.h b/cut-n-paste/synctex/synctex_parser.h
index fd74bd3d..e54a0176 100644
--- a/cut-n-paste/synctex/synctex_parser.h
+++ b/cut-n-paste/synctex/synctex_parser.h
@@ -1,360 +1,426 @@
 /*
-Copyright (c) 2008, 2009, 2010 , 2011 jerome DOT laurens AT u-bourgogne DOT fr
-
-This file is part of the SyncTeX package.
-
-Latest Revision: Tue Jun 14 08:23:30 UTC 2011
-
-Version: 1.18
-
-See synctex_parser_readme.txt for more details
-
-License:
---------
-Permission is hereby granted, free of charge, to any person
-obtaining a copy of this software and associated documentation
-files (the "Software"), to deal in the Software without
-restriction, including without limitation the rights to use,
-copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following
-conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE
-
-Except as contained in this notice, the name of the copyright holder
-shall not be used in advertising or otherwise to promote the sale,
-use or other dealings in this Software without prior written
-authorization from the copyright holder.
-
-Acknowledgments:
-----------------
-The author received useful remarks from the pdfTeX developers, especially Hahn The Thanh,
-and significant help from XeTeX developer Jonathan Kew
-
-Nota Bene:
-----------
-If you include or use a significant part of the synctex package into a software,
-I would appreciate to be listed as contributor and see "SyncTeX" highlighted.
-
-Version 1
-Thu Jun 19 09:39:21 UTC 2008
-
+ Copyright (c) 2008-2017 jerome DOT laurens AT u-bourgogne DOT fr
+ 
+ This file is part of the __SyncTeX__ package.
+ 
+ [//]: # (Latest Revision: Fri Jul 14 16:20:41 UTC 2017)
+ [//]: # (Version: 1.21)
+ 
+ See `synctex_parser_readme.md` for more details
+ 
+ ## License
+ 
+ Permission is hereby granted, free of charge, to any person
+ obtaining a copy of this software and associated documentation
+ files (the "Software"), to deal in the Software without
+ restriction, including without limitation the rights to use,
+ copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the
+ Software is furnished to do so, subject to the following
+ conditions:
+ 
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+ 
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE
+ 
+ Except as contained in this notice, the name of the copyright holder
+ shall not be used in advertising or otherwise to promote the sale,
+ use or other dealings in this Software without prior written
+ authorization from the copyright holder.
+ 
+ ## Acknowledgments:
+ 
+ The author received useful remarks from the __pdfTeX__ developers, especially Hahn The Thanh,
+ and significant help from __XeTeX__ developer Jonathan Kew.
+ 
+ ## Nota Bene:
+ 
+ If you include or use a significant part of the __SyncTeX__ package into a software,
+ I would appreciate to be listed as contributor and see "__SyncTeX__" highlighted.
 */
 
 #ifndef __SYNCTEX_PARSER__
 #   define __SYNCTEX_PARSER__
 
+#include "synctex_version.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
-
-#   define SYNCTEX_VERSION_STRING "1.18"
-
-/*  synctex_node_t is the type for all synctex nodes.
- *  The synctex file is parsed into a tree of nodes, either sheet, boxes, math nodes... */
-typedef struct _synctex_node *  synctex_node_t;
-
-/*  The main synctex object is a scanner
- *  Its implementation is considered private.
- *  The basic workflow is
- * - create a "synctex scanner" with the contents of a file
- * - perform actions on that scanner like display or edit queries
- * - free the scanner when the work is done
- */
-typedef struct __synctex_scanner_t _synctex_scanner_t;
-typedef _synctex_scanner_t *  synctex_scanner_t;
-
-/*  This is the designated method to create a new synctex scanner object.
- *  output is the pdf/dvi/xdv file associated to the synctex file.
- *  If necessary, it can be the tex file that originated the synctex file
- *  but this might cause problems if the \jobname has a custom value.
- *  Despite this method can accept a relative path in practice,
- *  you should only pass a full path name.
- *  The path should be encoded by the underlying file system,
- *  assuming that it is based on 8 bits characters, including UTF8,
- *  not 16 bits nor 32 bits.
- *  The last file extension is removed and replaced by the proper extension.
- *  Then the private method _synctex_scanner_new_with_contents_of_file is called.
- *  NULL is returned in case of an error or non existent file.
- *  Once you have a scanner, use the synctex_display_query and synctex_edit_query below.
- *	The new "build_directory" argument is available since version 1.5.
- *	It is the directory where all the auxiliary stuff is created.
- *	Sometimes, the synctex output file and the pdf, dvi or xdv files are not created in the same directory.
- *	This is the case in MikTeX (I will include this into TeX Live).
- *	This directory path can be nil, it will be ignored then.
- *	It can be either absolute or relative to the directory of the output pdf (dvi or xdv) file.
- *	If no synctex file is found in the same directory as the output file, then we try to find one in the build directory.
- *  Please note that this new "build_directory" is provided as a convenient argument but should not be used.
- *  In fact, this is implempented as a work around of a bug in MikTeX where the synctex file does not follow the pdf file.
- *  The new "parse" argument is available since version 1.5. In general, use 1.
- *  Use 0 only if you do not want to parse the content but just check the existence.
- */
-synctex_scanner_t synctex_scanner_new_with_output_file(const char * output, const char * build_directory, int parse);
-
-/*  This is the designated method to delete a synctex scanner object.
- *  Frees all the memory, you must call it when you are finished with the scanner.
- */
-void synctex_scanner_free(synctex_scanner_t scanner);
-
-/*  Send this message to force the scanner to parse the contents of the synctex output file.
- *  Nothing is performed if the file was already parsed.
- *  In each query below, this message is sent, but if you need to access information more directly,
- *  you must be sure that the parsing did occur.
- *  Usage:
- *		if((my_scanner = synctex_scanner_parse(my_scanner))) {
- *			continue with my_scanner...
- *		} else {
- *			there was a problem
- *		}
- */
-synctex_scanner_t synctex_scanner_parse(synctex_scanner_t scanner);
-
-/*  The main entry points.
- *  Given the file name, a line and a column number, synctex_display_query returns the number of nodes
- *  satisfying the contrain. Use code like
- *
- *     if(synctex_display_query(scanner,name,line,column)>0) {
- *         synctex_node_t node;
- *         while((node = synctex_next_result(scanner))) {
- *             // do something with node
- *             ...
- *         }
- *     }
- *
- *  For example, one can
- * - highlight each resulting node in the output, using synctex_node_h and synctex_node_v
- * - highlight all the rectangles enclosing those nodes, using synctex_box_... functions
- * - highlight just the character using that information
- *
- *  Given the page and the position in the page, synctex_edit_query returns the number of nodes
- *  satisfying the contrain. Use code like
- *
- *     if(synctex_edit_query(scanner,page,h,v)>0) {
- *         synctex_node_t node;
- *         while(node = synctex_next_result(scanner)) {
- *             // do something with node
- *             ...
- *         }
- *     }
- *
- *  For example, one can
- * - highlight each resulting line in the input,
- * - highlight just the character using that information
- *
- *  page is 1 based
- *  h and v are coordinates in 72 dpi unit, relative to the top left corner of the page.
- *  If you make a new query, the result of the previous one is discarded.
- *  If one of this function returns a non positive integer,
- *  it means that an error occurred.
- *
- *  Both methods are conservative, in the sense that matching is weak.
- *  If the exact column number is not found, there will be an answer with the whole line.
- *
- *  Sumatra-PDF, Skim, iTeXMac2 and Texworks are examples of open source software that use this library.
- *  You can browse their code for a concrete implementation.
- */
-typedef long synctex_status_t;
-synctex_status_t synctex_display_query(synctex_scanner_t scanner,const char *  name,int line,int column);
-synctex_status_t synctex_edit_query(synctex_scanner_t scanner,int page,float h,float v);
-synctex_node_t synctex_next_result(synctex_scanner_t scanner);
-
-/*  Display all the information contained in the scanner object.
- *  If the records are too numerous, only the first ones are displayed.
- *  This is mainly for informatinal purpose to help developers.
- */
-void synctex_scanner_display(synctex_scanner_t scanner);
-
-/*  The x and y offset of the origin in TeX coordinates. The magnification
-   These are used by pdf viewers that want to display the real box size.
-   For example, getting the horizontal coordinates of a node would require
-   synctex_node_box_h(node)*synctex_scanner_magnification(scanner)+synctex_scanner_x_offset(scanner)
-   Getting its TeX width would simply require
-   synctex_node_box_width(node)*synctex_scanner_magnification(scanner)
-   but direct methods are available for that below.
- */
-int synctex_scanner_x_offset(synctex_scanner_t scanner);
-int synctex_scanner_y_offset(synctex_scanner_t scanner);
-float synctex_scanner_magnification(synctex_scanner_t scanner);
-
-/*  Managing the input file names.
- *  Given a tag, synctex_scanner_get_name will return the corresponding file name.
- *  Conversely, given a file name, synctex_scanner_get_tag will retur, the corresponding tag.
- *  The file name must be the very same as understood by TeX.
- *  For example, if you \input myDir/foo.tex, the file name is myDir/foo.tex.
- *  No automatic path expansion is performed.
- *  Finally, synctex_scanner_input is the first input node of the scanner.
- *  To browse all the input node, use a loop like
- *
- *     if((input_node = synctex_scanner_input(scanner))){
- *         do {
- *             blah
- *         } while((input_node=synctex_node_sibling(input_node)));
- *     }
- *
- *  The output is the name that was used to create the scanner.
- *  The synctex is the real name of the synctex file,
- *  it was obtained from output by setting the proper file extension.
- */
-const char * synctex_scanner_get_name(synctex_scanner_t scanner,int tag);
-int synctex_scanner_get_tag(synctex_scanner_t scanner,const char * name);
-synctex_node_t synctex_scanner_input(synctex_scanner_t scanner);
-const char * synctex_scanner_get_output(synctex_scanner_t scanner);
-const char * synctex_scanner_get_synctex(synctex_scanner_t scanner);
-
-/*  Browsing the nodes
- *  parent, child and sibling are standard names for tree nodes.
- *  The parent is one level higher, the child is one level deeper,
- *  and the sibling is at the same level.
- *  The sheet of a node is the first ancestor, it is of type sheet.
- *  A node and its sibling have the same parent.
- *  A node is the parent of its child.
- *  A node is either the child of its parent,
- *  or belongs to the sibling chain of its parent's child.
- *  The next node is either the child, the sibling or the parent's sibling,
- *  unless the parent is a sheet.
- *  This allows to navigate through all the nodes of a given sheet node:
- *
- *     synctex_node_t node = sheet;
- *     while((node = synctex_node_next(node))) {
- *         // do something with node
- *     }
- *
- *  With synctex_sheet_content, you can retrieve the sheet node given the page.
- *  The page is 1 based, according to TeX standards.
- *  Conversely synctex_node_sheet allows to retrieve the sheet containing a given node.
- */
-synctex_node_t synctex_node_parent(synctex_node_t node);
-synctex_node_t synctex_node_sheet(synctex_node_t node);
-synctex_node_t synctex_node_child(synctex_node_t node);
-synctex_node_t synctex_node_sibling(synctex_node_t node);
-synctex_node_t synctex_node_next(synctex_node_t node);
-synctex_node_t synctex_sheet(synctex_scanner_t scanner,int page);
-synctex_node_t synctex_sheet_content(synctex_scanner_t scanner,int page);
-
-/*  These are the types of the synctex nodes */
-typedef enum {
-	synctex_node_type_error = 0,
-	synctex_node_type_input,
-	synctex_node_type_sheet,
-	synctex_node_type_vbox,
-	synctex_node_type_void_vbox,
-	synctex_node_type_hbox,
-	synctex_node_type_void_hbox,
-	synctex_node_type_kern,
-	synctex_node_type_glue,
-	synctex_node_type_math,
-	synctex_node_type_boundary,
-	synctex_node_number_of_types
-} synctex_node_type_t;
-
-/*  synctex_node_type gives the type of a given node,
- *  synctex_node_isa gives the same information as a human readable text. */
-synctex_node_type_t synctex_node_type(synctex_node_t node);
-const char * synctex_node_isa(synctex_node_t node);
-
-/*  This is primarily used for debugging purpose.
- *  The second one logs information for the node and recursively displays information for its next node */
-void synctex_node_log(synctex_node_t node);
-void synctex_node_display(synctex_node_t node);
-
-/*  Given a node, access to the location in the synctex file where it is defined.
- */
-typedef unsigned int synctex_charindex_t;
-synctex_charindex_t synctex_node_charindex(synctex_node_t node);
-
-/*  Given a node, access to its tag, line and column.
- *  The line and column numbers are 1 based.
- *  The latter is not yet fully supported in TeX, the default implementation returns 0 which means the whole line.
- *  When the tag is known, the scanner of the node will give the corresponding file name.
- *  When the tag is known, the scanner of the node will give the name.
- */
-int synctex_node_tag(synctex_node_t node);
-int synctex_node_line(synctex_node_t node);
-int synctex_node_column(synctex_node_t node);
-
-/*  In order to enhance forward synchronization,
- *  non void horizontal boxes have supplemental cached information.
- *  The mean line is the average of the line numbers of the included nodes.
- *  The child count is the number of chidren.
- */
-int synctex_node_mean_line(synctex_node_t node);
-int synctex_node_child_count(synctex_node_t node);
-
-/*  This is the page where the node appears.
- *  This is a 1 based index as given by TeX.
- */
-int synctex_node_page(synctex_node_t node);
-
-/*  For quite all nodes, horizontal, vertical coordinates, and width.
- *  These are expressed in TeX small points coordinates, with origin at the top left corner.
- */
-int synctex_node_h(synctex_node_t node);
-int synctex_node_v(synctex_node_t node);
-int synctex_node_width(synctex_node_t node);
-
-/*  For all nodes, dimensions of the enclosing box.
- *  These are expressed in TeX small points coordinates, with origin at the top left corner.
- *  A box is enclosing itself.
- */
-int synctex_node_box_h(synctex_node_t node);
-int synctex_node_box_v(synctex_node_t node);
-int synctex_node_box_width(synctex_node_t node);
-int synctex_node_box_height(synctex_node_t node);
-int synctex_node_box_depth(synctex_node_t node);
-
-/*  For quite all nodes, horizontal, vertical coordinates, and width.
- *  The visible dimensions are bigger than real ones to compensate 0 width boxes
- *  that do contain nodes.
- *  These are expressed in page coordinates, with origin at the top left corner.
- *  A box is enclosing itself.
- */
-float synctex_node_visible_h(synctex_node_t node);
-float synctex_node_visible_v(synctex_node_t node);
-float synctex_node_visible_width(synctex_node_t node);
-/*  For all nodes, visible dimensions of the enclosing box.
- *  A box is enclosing itself.
- *  The visible dimensions are bigger than real ones to compensate 0 width boxes
- *  that do contain nodes.
- */
-float synctex_node_box_visible_h(synctex_node_t node);
-float synctex_node_box_visible_v(synctex_node_t node);
-float synctex_node_box_visible_width(synctex_node_t node);
-float synctex_node_box_visible_height(synctex_node_t node);
-float synctex_node_box_visible_depth(synctex_node_t node);
-
-/*  The main synctex updater object.
- *  This object is used to append information to the synctex file.
- *  Its implementation is considered private.
- *  It is used by the synctex command line tool to take into account modifications
- *  that could occur while postprocessing files by dvipdf like filters.
- */
-typedef struct __synctex_updater_t _synctex_updater_t;
-typedef _synctex_updater_t * synctex_updater_t;
-
-/*  Designated initializer.
- *  Once you are done with your whole job,
- *  free the updater */
-synctex_updater_t synctex_updater_new_with_output_file(const char * output, const char * directory);
-
-/*  Use the next functions to append records to the synctex file,
- *  no consistency tests made on the arguments */
-void synctex_updater_append_magnification(synctex_updater_t updater, char *  magnification);
-void synctex_updater_append_x_offset(synctex_updater_t updater, char *  x_offset);
-void synctex_updater_append_y_offset(synctex_updater_t updater, char *  y_offset);
-
-/*  You MUST free the updater, once everything is properly appended */
-void synctex_updater_free(synctex_updater_t updater);
+    
+    /*  The main synctex object is a scanner.
+     *  Its implementation is considered private.
+     *  The basic workflow is
+     *  -   create a "synctex scanner" with the contents of a file
+     *  -   perform actions on that scanner like
+        synctex_display_query or synctex_edit_query below.
+     *  -   perform actions on nodes returned by the scanner
+     *  - free the scanner when the work is done
+     */
+    typedef struct synctex_scanner_t synctex_scanner_s;
+    typedef synctex_scanner_s * synctex_scanner_p;
+    
+    /**
+     *  This is the designated method to create
+     *  a new synctex scanner object.
+     *  - argument output: the pdf/dvi/xdv file associated
+     *      to the synctex file.
+     *      If necessary, it can be the tex file that
+     *      originated the synctex file but this might cause
+     *      problems if the \jobname has a custom value.
+     *      Despite this method can accept a relative path
+     *      in practice, you should only pass full paths.
+     *      The path should be encoded by the underlying
+     *      file system, assuming that it is based on
+     *      8 bits characters, including UTF8,
+     *      not 16 bits nor 32 bits.
+     *      The last file extension is removed and
+     *      replaced by the proper extension,
+     *      either synctex or synctex.gz.
+     *  - argument build_directory: It is the directory where
+     *      all the auxiliary stuff is created.
+     *      If no synctex file is found in the same directory
+     *      as the output file, then we try to find one in
+     *      this build directory.
+     *      It is the directory where all the auxiliary
+     *      stuff is created. Sometimes, the synctex output
+     *      file and the pdf, dvi or xdv files are not 
+     *      created in the same location. See MikTeX.
+     *      This directory path can be NULL,
+     *      it will be ignored then.
+     *      It can be either absolute or relative to the
+     *      directory of the output pdf (dvi or xdv) file.
+     *      Please note that this new argument is provided
+     *      as a convenience but should not be used.
+     *      Available since version 1.5.
+     *  - argument parse: In general, use 1.
+     *      Use 0 only if you do not want to parse the
+     *      content but just check for existence.
+     *      Available since version 1.5
+     *   - resturn: a scanner. NULL is returned in case
+     *      of an error or non existent file.
+     */
+    synctex_scanner_p synctex_scanner_new_with_output_file(const char * output, const char * build_directory, int parse);
+    
+    /**
+     *  Designated method to delete a synctex scanner object,
+     *  including all its internal resources.
+     *  Frees all the memory, you must call it when you are finished with the scanner.
+     *  - argument scanner: a scanner.
+     *  - returns: an integer used for testing purposes.
+     */
+    int synctex_scanner_free(synctex_scanner_p scanner);
+    
+    /**
+     *  Send this message to force the scanner to
+     *  parse the contents of the synctex output file.
+     *  Nothing is performed if the file was already parsed.
+     *  In each query below, this message is sent,
+     *  but if you need to access information more directly,
+     *  you must ensure that the parsing did occur.
+     *  Usage:
+     *		if((my_scanner = synctex_scanner_parse(my_scanner))) {
+     *			continue with my_scanner...
+     *		} else {
+     *			there was a problem
+     *		}
+     *  - returns: the argument on success.
+     *      On failure, frees scanner and returns NULL.
+     */
+    synctex_scanner_p synctex_scanner_parse(synctex_scanner_p scanner);
+    
+    /*  synctex_node_p is the type for all synctex nodes.
+     *  Its implementation is considered private.
+     *  The synctex file is parsed into a tree of nodes, either sheet, form, boxes, math nodes... */
+    
+    typedef struct synctex_node_t synctex_node_s;
+    typedef synctex_node_s * synctex_node_p;
+    
+    /*  The main entry points.
+     *  Given the file name, a line and a column number, synctex_display_query returns the number of nodes
+     *  satisfying the contrain. Use code like
+     *
+     *      if(synctex_display_query(scanner,name,line,column,page_hint)>0) {
+     *         synctex_node_p node;
+     *         while((node = synctex_scanner_next_result(scanner))) {
+     *             // do something with node
+     *             ...
+     *         }
+     *     }
+     *
+     *  Please notice that since version 1.19,
+     *  there is a new argument page_hint.
+     *  The results in pages closer to page_hint are given first.
+     *  For example, one can
+     * - highlight each resulting node in the output, using synctex_node_visible_h and synctex_node_visible_v
+     * - highlight all the rectangles enclosing those nodes, using synctex_node_box_visible_... functions
+     * - highlight just the character using that information
+     *
+     *  Given the page and the position in the page, synctex_edit_query returns the number of nodes
+     *  satisfying the contrain. Use code like
+     *
+     *     if(synctex_edit_query(scanner,page,h,v)>0) {
+     *         synctex_node_p node;
+     *         while(node = synctex_scanner_next_result(scanner)) {
+     *             // do something with node
+     *             ...
+     *         }
+     *     }
+     *
+     *  For example, one can
+     * - highlight each resulting line in the input,
+     * - highlight just the character using that information
+     *
+     *  page is 1 based
+     *  h and v are coordinates in 72 dpi unit, relative to the top left corner of the page.
+     *  If you make a new query, the result of the previous one is discarded. If you need to make more than one query
+     *  in parallel, use the iterator API exposed in
+     *  the synctex_parser_private.h header.
+     *  If one of this function returns a negative integer,
+     *  it means that an error occurred.
+     *
+     *  Both methods are conservative, in the sense that matching is weak.
+     *  If the exact column number is not found, there will be an answer with the whole line.
+     *
+     *  Sumatra-PDF, Skim, iTeXMac2, TeXShop and Texworks are examples of open source software that use this library.
+     *  You can browse their code for a concrete implementation.
+     */
+    typedef long synctex_status_t;
+    /*  The page_hint argument is used to resolve ambiguities.
+     *  Whenever, different matches occur, the ones closest
+     *  to the page will be given first. Pass a negative number
+     *  when in doubt. Using pdf forms may lead to ambiguities.
+     */
+    synctex_status_t synctex_display_query(synctex_scanner_p scanner,const char *  name,int line,int column, int page_hint);
+    synctex_status_t synctex_edit_query(synctex_scanner_p scanner,int page,float h,float v);
+    synctex_node_p synctex_scanner_next_result(synctex_scanner_p scanner);
+    synctex_status_t synctex_scanner_reset_result(synctex_scanner_p scanner);
+    
+    /**
+     *  The horizontal and vertical location,
+     *  the width, height and depth of a box enclosing node.
+     *  All dimensions are given in page coordinates
+     *  as opposite to TeX coordinates.
+     *  The origin is at the top left corner of the page.
+     *  Code example for Qt5:
+     *  (from TeXworks source TWSynchronize.cpp)
+     *  QRectF nodeRect(synctex_node_box_visible_h(node),
+     *      synctex_node_box_visible_v(node) - 
+     *          synctex_node_box_visible_height(node),
+     *      synctex_node_box_visible_width(node),
+     *      synctex_node_box_visible_height(node) + 
+     *          synctex_node_box_visible_depth(node));
+     *  Code example for Cocoa:
+     *  NSRect bounds = [pdfPage
+     *      boundsForBox:kPDFDisplayBoxMediaBox];
+     *  NSRect nodeRect = NSMakeRect(
+     *      synctex_node_box_visible_h(node),
+     *      NSMaxY(bounds)-synctex_node_box_visible_v(node) +
+     *          synctex_node_box_visible_height(node),
+     *      synctex_node_box_visible_width(node),
+     *      synctex_node_box_visible_height(node) +
+     *          synctex_node_box_visible_depth(node)
+     *      );
+     *  The visible dimensions are bigger than real ones
+     *  to compensate 0 width boxes or nodes intentionnaly
+     *  put outside the box (using \kern for example).
+     *  - parameter node: a node.
+     *  - returns: a float.
+     *  - author: JL
+     */
+    float synctex_node_box_visible_h(synctex_node_p node);
+    float synctex_node_box_visible_v(synctex_node_p node);
+    float synctex_node_box_visible_width(synctex_node_p node);
+    float synctex_node_box_visible_height(synctex_node_p node);
+    float synctex_node_box_visible_depth(synctex_node_p node);
+
+    /**
+     *  For quite all nodes, horizontal and vertical coordinates, and width.
+     *  All dimensions are given in page coordinates
+     *  as opposite to TeX coordinates.
+     *  The origin is at the top left corner of the page.
+     *  The visible dimensions are bigger than real ones
+     *  to compensate 0 width boxes or nodes intentionnaly
+     *  put outside the box (using \kern for example).
+     *  All nodes have coordinates, but all nodes don't
+     *  have non null size. For example, math nodes
+     *  have no width according to TeX, and in that case
+     *  synctex_node_visible_width simply returns 0.
+     *  The same holds for kern nodes that do not have
+     *  height nor depth, etc...
+     */
+    float synctex_node_visible_h(synctex_node_p node);
+    float synctex_node_visible_v(synctex_node_p node);
+    float synctex_node_visible_width(synctex_node_p node);
+    float synctex_node_visible_height(synctex_node_p node);
+    float synctex_node_visible_depth(synctex_node_p node);
+
+    /**
+     *  Given a node, access to its tag, line and column.
+     *  The line and column numbers are 1 based.
+     *  The latter is not yet fully supported in TeX,
+     *  the default implementation returns 0
+     *  which means the whole line.
+     *  synctex_node_get_name returns the path of the
+     *  TeX source file that was used to create the node.
+     *  When the tag is known, the scanner of the node
+     *  will also give that same file name, see
+     *  synctex_scanner_get_name below.
+     *  For an hbox node, the mean line is the mean
+     *  of all the lines of the child nodes.
+     *  Sometimes, when synchronization form pdf to source
+     *  fails with the line, one should try with the
+     *  mean line.
+     */
+    int synctex_node_tag(synctex_node_p node);
+    int synctex_node_line(synctex_node_p node);
+    int synctex_node_mean_line(synctex_node_p node);
+    int synctex_node_column(synctex_node_p node);
+    const char * synctex_node_get_name(synctex_node_p node);
+    
+    /**
+     This is the page where the node appears.
+     *  This is a 1 based index as given by TeX.
+     */
+    int synctex_node_page(synctex_node_p node);
+
+    /**
+     *  Display all the information contained in the scanner.
+     *  If the records are too numerous, only the first ones are displayed.
+     *  This is mainly for informational purpose to help developers.
+     */
+    void synctex_scanner_display(synctex_scanner_p scanner);
+    
+    /*  Managing the input file names.
+     *  Given a tag, synctex_scanner_get_name will return the corresponding file name.
+     *  Conversely, given a file name, synctex_scanner_get_tag will return, the corresponding tag.
+     *  The file name must be the very same as understood by TeX.
+     *  For example, if you \input myDir/foo.tex, the file name is myDir/foo.tex.
+     *  No automatic path expansion is performed.
+     *  Finally, synctex_scanner_input is the first input node of the scanner.
+     *  To browse all the input node, use a loop like
+     *      ...
+     *      synctex_node_p = input_node;
+     *      ...
+     *      if((input_node = synctex_scanner_input(scanner))) {
+     *          do {
+     *              blah
+     *          } while((input_node=synctex_node_sibling(input_node)));
+     *     }
+     *
+     *  The output is the name that was used to create the scanner.
+     *  The synctex is the real name of the synctex file,
+     *  it was obtained from output by setting the proper file extension.
+     */
+    const char * synctex_scanner_get_name(synctex_scanner_p scanner,int tag);
+    
+    int synctex_scanner_get_tag(synctex_scanner_p scanner,const char * name);
+    
+    synctex_node_p synctex_scanner_input(synctex_scanner_p scanner);
+    synctex_node_p synctex_scanner_input_with_tag(synctex_scanner_p scanner,int tag);
+    const char * synctex_scanner_get_output(synctex_scanner_p scanner);
+    const char * synctex_scanner_get_synctex(synctex_scanner_p scanner);
+    
+    /*  The x and y offset of the origin in TeX coordinates. The magnification
+     These are used by pdf viewers that want to display the real box size.
+     For example, getting the horizontal coordinates of a node would require
+     synctex_node_box_h(node)*synctex_scanner_magnification(scanner)+synctex_scanner_x_offset(scanner)
+     Getting its TeX width would simply require
+     synctex_node_box_width(node)*synctex_scanner_magnification(scanner)
+     but direct methods are available for that below.
+     */
+    int synctex_scanner_x_offset(synctex_scanner_p scanner);
+    int synctex_scanner_y_offset(synctex_scanner_p scanner);
+    float synctex_scanner_magnification(synctex_scanner_p scanner);
+    
+    /**
+     *  ## Browsing the nodes
+     *  parent, child and sibling are standard names for tree nodes.
+     *  The parent is one level higher,
+     *  the child is one level deeper,
+     *  and the sibling is at the same level.
+     *  A node and its sibling have the same parent.
+     *  A node is the parent of its children.
+     *  A node is either the child of its parent,
+     *  or belongs to the sibling chain of its parent's child.
+     *  The sheet or form of a node is the topmost ancestor,
+     *  it is of type sheet or form.
+     *  The next node is either the child, the sibling or the parent's sibling,
+     *  unless the parent is a sheet, a form or NULL.
+     *  This allows to navigate through all the nodes of a given sheet node:
+     *
+     *     synctex_node_p node = sheet;
+     *     while((node = synctex_node_next(node))) {
+     *         // do something with node
+     *     }
+     *
+     *  With synctex_sheet_content and synctex_form_content,
+     *  you can retrieve the sheet node given the page
+     *  or form tag.
+     *  The page is 1 based, according to TeX standards.
+     *  Conversely synctex_node_parent_sheet or
+     *  synctex_node_parent_form allows to retrieve
+     *  the sheet or the form containing a given node.
+     *  Notice that a node is not contained in a sheet
+     *  and a form at the same time.
+     *  Some nodes are not contained in either (handles).
+     */
+    
+    synctex_node_p synctex_node_parent(synctex_node_p node);
+    synctex_node_p synctex_node_parent_sheet(synctex_node_p node);
+    synctex_node_p synctex_node_parent_form(synctex_node_p node);
+    synctex_node_p synctex_node_child(synctex_node_p node);
+    synctex_node_p synctex_node_last_child(synctex_node_p node);
+    synctex_node_p synctex_node_sibling(synctex_node_p node);
+    synctex_node_p synctex_node_last_sibling(synctex_node_p node);
+    synctex_node_p synctex_node_arg_sibling(synctex_node_p node);
+    synctex_node_p synctex_node_next(synctex_node_p node);
+    
+    /**
+     *  Top level entry points.
+     *  The scanner owns a list of sheet siblings and
+     *  a list of form siblings.
+     *  Sheets or forms have one child which is a box:
+     *  theie contents.
+     *  - argument page: 1 based sheet page number.
+     *  - argument tag: 1 based form tag number.
+     */
+    synctex_node_p synctex_sheet(synctex_scanner_p scanner,int page);
+    synctex_node_p synctex_sheet_content(synctex_scanner_p scanner,int page);
+    synctex_node_p synctex_form(synctex_scanner_p scanner,int tag);
+    synctex_node_p synctex_form_content(synctex_scanner_p scanner,int tag);
+    
+    /*  This is primarily used for debugging purpose.
+     *  The second one logs information for the node and recursively displays information for its next node */
+    void synctex_node_log(synctex_node_p node);
+    void synctex_node_display(synctex_node_p node);
+    
+    /*  For quite all nodes, horizontal, vertical coordinates, and width.
+     *  These are expressed in TeX small points coordinates, with origin at the top left corner.
+     */
+    int synctex_node_h(synctex_node_p node);
+    int synctex_node_v(synctex_node_p node);
+    int synctex_node_width(synctex_node_p node);
+    int synctex_node_height(synctex_node_p node);
+    int synctex_node_depth(synctex_node_p node);
+    
+    /*  For all nodes, dimensions of the enclosing box.
+     *  These are expressed in TeX small points coordinates, with origin at the top left corner.
+     *  A box is enclosing itself.
+     */
+    int synctex_node_box_h(synctex_node_p node);
+    int synctex_node_box_v(synctex_node_p node);
+    int synctex_node_box_width(synctex_node_p node);
+    int synctex_node_box_height(synctex_node_p node);
+    int synctex_node_box_depth(synctex_node_p node);
 
 #ifdef __cplusplus
 }