From ca4a6cc93318a5aa22584599a9d2fc3d5df21bfc Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Wed, 27 Oct 2010 16:09:07 +0000
Subject: [PATCH] * Hack to handle PGF/TikZ constructs that require an
 additional run.

svn path=/nixpkgs/trunk/; revision=24505
---
 pkgs/misc/tex/nix/run-latex.sh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/pkgs/misc/tex/nix/run-latex.sh b/pkgs/misc/tex/nix/run-latex.sh
index 1db41f3c336..58c7cac302f 100644
--- a/pkgs/misc/tex/nix/run-latex.sh
+++ b/pkgs/misc/tex/nix/run-latex.sh
@@ -64,9 +64,9 @@ runLaTeX
 echo
 
 
-# Run bibtex to process all bibliographies.  There may be several when
-# we're using the multibib package.
 for auxFile in $(find . -name "*.aux"); do
+    # Run bibtex to process all bibliographies.  There may be several
+    # when we're using the multibib package.
     if grep -q '\\citation' $auxFile; then
         echo "RUNNING BIBTEX ON $auxFile..."
         auxBase=$(basename $auxFile .aux)
@@ -75,6 +75,12 @@ for auxFile in $(find . -name "*.aux"); do
         runNeeded=1
         echo
     fi
+
+    # "\pgfsyspdfmark" in the aux file seems to indicate that PGF/TikZ
+    # requires a second run (e.g. to resolve arrows between pictures).
+    if grep -q pgfsyspdfmark $auxFile; then
+        runNeeded=1
+    fi
 done