From b7077fb01c84453b88d12280faa4bcae3ac75591 Mon Sep 17 00:00:00 2001
From: Hanson Char <hanson.char@gmail.com>
Date: Sun, 23 Jun 2024 21:34:06 -0700
Subject: [PATCH] Add missing premable to Sugiyama.lua

---
 .../lua/pgf/gd/layered/Sugiyama.lua           | 127 +++++++++---------
 1 file changed, 66 insertions(+), 61 deletions(-)

diff --git a/tex/generic/pgf/graphdrawing/lua/pgf/gd/layered/Sugiyama.lua b/tex/generic/pgf/graphdrawing/lua/pgf/gd/layered/Sugiyama.lua
index 8456b9525..3aa264786 100644
--- a/tex/generic/pgf/graphdrawing/lua/pgf/gd/layered/Sugiyama.lua
+++ b/tex/generic/pgf/graphdrawing/lua/pgf/gd/layered/Sugiyama.lua
@@ -73,27 +73,27 @@ declare {
   "]],
   examples = {
     options = [[ preamble={\usetikzlibrary{graphs,graphdrawing} \usegdlibrary{layered}} ]],
-    [["
-    \tikz \graph [layered layout, sibling distance=7mm]
-    {
-      a -> {
-        b,
-        c -> { d, e, f }
-      } ->
-      h ->
-      a
-    };
-  "]],[["
-    \tikz [rounded corners] \graph [layered layout, sibling distance=7mm]
-    {
-      a -> {
-        b,
-        c -> { d, e, f }
-      } ->
-      h ->
-      a
-    };
-  "]]
+    [[
+      \tikz \graph [layered layout, sibling distance=7mm]
+      {
+        a -> {
+          b,
+          c -> { d, e, f }
+        } ->
+        h ->
+        a
+      };
+    ]],[[
+      \tikz [rounded corners] \graph [layered layout, sibling distance=7mm]
+      {
+        a -> {
+          b,
+          c -> { d, e, f }
+        } ->
+        h ->
+        a
+      };
+    ]]
   }
 }
 
@@ -110,11 +110,14 @@ declare {
     causes an edge to become shorter, a larger |minimum layers| value
     causes an edge to be longer.
   "]],
-  examples = [["
-    \tikz \graph [layered layout] {
-      a -- {b [> minimum layers=3], c, d} -- e -- a;
-    };
-  "]]
+  examples = {
+    options = [[ preamble={\usetikzlibrary{graphs,graphdrawing} \usegdlibrary{layered}} ]],
+    [[
+      \tikz \graph [layered layout] {
+        a -- {b [> minimum layers=3], c, d} -- e -- a;
+      };
+    ]]
+  }
 }
 
 
@@ -129,42 +132,44 @@ declare {
     a on the same layer of a layered layout (this option is also known
     as |same rank|). You use it like this:
   "]],
-  examples = {[["
-    \tikz \graph [layered layout] {
-      a -- b -- c -- d -- e;
-
-      { [same layer] a, b };
-      { [same layer] d, e };
-    };
-  "]],[['
-      \tikz [rounded corners] \graph [layered layout] {
-        1972 -> 1976 -> 1978 -> 1980 -> 1982 -> 1984 -> 1986 -> 1988 -> 1990 -> future;
-
-        { [same layer] 1972, Thompson };
-        { [same layer] 1976, Mashey, Bourne },
-        { [same layer] 1978, Formshell, csh },
-        { [same layer] 1980, esh, vsh },
-        { [same layer] 1982, ksh, "System-V" },
-        { [same layer] 1984, v9sh, tcsh },
-        { [same layer] 1986, "ksh-i" },
-        { [same layer] 1988, KornShell ,Perl, rc },
-        { [same layer] 1990, tcl, Bash },
-        { [same layer] "future", POSIX, "ksh-POSIX" },
-
-        Thompson -> { Mashey, Bourne, csh -> tcsh},
-        Bourne -> { ksh, esh, vsh, "System-V", v9sh -> rc, Bash},
-        { "ksh-i", KornShell } -> Bash,
-        { esh, vsh, Formshell, csh } -> ksh,
-        { KornShell, "System-V" } -> POSIX,
-        ksh -> "ksh-i" -> KornShell -> "ksh-POSIX",
-        Bourne -> Formshell,
-
-        { [edge={draw=none}]
-          Bash -> tcl,
-          KornShell -> Perl
-        }
+  examples = {
+    options = [[ preamble={\usetikzlibrary{graphs,graphdrawing} \usegdlibrary{layered}} ]],
+    [[
+      \tikz \graph [layered layout] {
+        a -- b -- c -- d -- e;
+
+        { [same layer] a, b };
+        { [same layer] d, e };
       };
-  ']]
+    ]],[[
+        \tikz [rounded corners] \graph [layered layout] {
+          1972 -> 1976 -> 1978 -> 1980 -> 1982 -> 1984 -> 1986 -> 1988 -> 1990 -> future;
+
+          { [same layer] 1972, Thompson };
+          { [same layer] 1976, Mashey, Bourne },
+          { [same layer] 1978, Formshell, csh },
+          { [same layer] 1980, esh, vsh },
+          { [same layer] 1982, ksh, "System-V" },
+          { [same layer] 1984, v9sh, tcsh },
+          { [same layer] 1986, "ksh-i" },
+          { [same layer] 1988, KornShell ,Perl, rc },
+          { [same layer] 1990, tcl, Bash },
+          { [same layer] "future", POSIX, "ksh-POSIX" },
+
+          Thompson -> { Mashey, Bourne, csh -> tcsh},
+          Bourne -> { ksh, esh, vsh, "System-V", v9sh -> rc, Bash},
+          { "ksh-i", KornShell } -> Bash,
+          { esh, vsh, Formshell, csh } -> ksh,
+          { KornShell, "System-V" } -> POSIX,
+          ksh -> "ksh-i" -> KornShell -> "ksh-POSIX",
+          Bourne -> Formshell,
+
+          { [edge={draw=none}]
+            Bash -> tcl,
+            KornShell -> Perl
+          }
+        };
+    ]]
   }
 }