Protect parens and order of operations in turtle #789

pgf-tikz · Nov 25, 2019 · 41a8555 · 41a8555
1 parent 319cae0
commit 41a8555
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibraryturtle.code.tex b/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibraryturtle.code.tex
@@ -28,7 +28,7 @@
 % given, by turtle distance
 \tikzset{
   turtle/forward/.default=\pgfkeysvalueof{/tikz/turtle/distance},
-  turtle/forward/.style={/tikz/insert path={to[/tikz/turtle/how]++(\tikz@lib@turtle@dir:#1)}}
+  turtle/forward/.style={/tikz/insert path={to[/tikz/turtle/how]++({\tikz@lib@turtle@dir}:{#1})}}
 }%
 
 
@@ -46,7 +46,7 @@
 \tikzset{
   turtle/left/.default=90,
   turtle/left/.code={%
-    \pgfmathparse{#1+\tikz@lib@turtle@dir}%
+    \pgfmathparse{(#1)+(\tikz@lib@turtle@dir)}%
     \ifdim\pgfmathresult pt>360pt\relax%
       \pgfmathparse{\pgfmathresult-360}%
     \fi%
@@ -60,7 +60,7 @@
   turtle/right/.default=90,
   turtle/right/.code={%
     \pgfmathparse{#1}
-    \pgfmathparse{\tikz@lib@turtle@dir-\pgfmathresult}%
+    \pgfmathparse{(\tikz@lib@turtle@dir)-\pgfmathresult}%
     \ifdim\pgfmathresult pt<0pt\relax%
       \pgfmathparse{\pgfmathresult+360}%
     \fi%