Mupdf hack to open pdf directly to the (sub)*section you're editing from vim in Latex

ftpplugintex.vim

" Function: OpenPdfToSection
function! OpenPdfToSection()
    let g:my_section = substitute(getline(search('\\\(sub\)\?section', 'bn')), '\\\%(sub\)\?section{\([^}]\+\)}', '\1', '')
    " some weird trailing space can appear, remove them
    let g:my_section = substitute(g:my_section, "^ *", "", "g")
    let g:Tex_ViewRuleComplete_pdf = 'mupdf -f "'.g:my_section.'" -r 102 $*.pdf'
    call Tex_ViewLaTeX()
    " reinitialize the variable to keep <leader>lv working
    let g:Tex_ViewRuleComplete_pdf = 'mupdf -r 102 $*.pdf'
endfunction
map <Leader>lg :call OpenPdfToSection()<CR>

mupdf_patch.git

from 7a82202a845e3e447500ec55c549b024c46d61f1 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor.andersson@artifex.com>
Date: Wed, 21 Sep 2011 12:40:05 +0200
Subject: [PATCH] Add command line flag to search for a string.

---
 apps/x11_main.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/apps/x11_main.c b/apps/x11_main.c
index c2aef91..4fb788b 100644
--- a/apps/x11_main.c
+++ b/apps/x11_main.c
@@ -86,6 +86,7 @@ static char copylatin1[1024 * 16] = "";
 static char copyutf8[1024 * 48] = "";
 static Time copytime;
 static char *filename;
+static char *initial_search = NULL;
 
 static pdfapp_t gapp;
 static int closing = 0;
@@ -555,7 +556,7 @@ int main(int argc, char **argv)
   int width = -1;
   int height = -1;
 
-  while ((c = fz_getopt(argc, argv, "p:r:b:A")) != -1)
+  while ((c = fz_getopt(argc, argv, "p:r:f:b:A")) != -1)
   {
     switch (c)
     {
@@ -563,6 +564,7 @@ int main(int argc, char **argv)
     case 'r': resolution = atoi(fz_optarg); break;
     case 'A': accelerate = 0; break;
     case 'b': fz_set_aa_level(atoi(fz_optarg)); break;
+    case 'f': initial_search = fz_optarg; break;
     default: usage();
     }
   }
@@ -597,6 +599,13 @@ int main(int argc, char **argv)
 
   pdfapp_open(&gapp, filename, fd, 0);
 
+  if (initial_search)
+  {
+    strcpy(gapp.search, initial_search);
+    gapp.searchdir = 1;
+    pdfapp_onkey(&gapp, 'n');
+  }
+
   FD_ZERO(&fds);
   FD_SET(x11fd, &fds);
 
-- 
1.7.6.1