findcurve execution: report end with [] rather than None

Will want this in a moment for siman, which more conveniently
prints lots of other guff from GSL.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/findcurve.c b/findcurve.c
index 605c60bd9b603827594d31dd44028a523a53c457..695277887b3ce6e2c70b6f9cda5533cdb101c111 100644 (file)
--- a/findcurve.c
+++ b/findcurve.c
@@ -113,6 +113,6 @@ int main(void) {
       exit(-1);
     }
 
-    printf("None\n");
+    printf("[]\n");
   }
 }

diff --git a/helixish.py b/helixish.py
index 1a8c074e51fd623967bb74c16926381112442e14..ac6d4735695f1ada339d031ce09eeca7e89e5a62 100644 (file)
--- a/helixish.py
+++ b/helixish.py
@@ -200,7 +200,7 @@ class HelixishCurve():
       #dbg('GOT ', l)
       if not l: vdbg().crashing('findcurve EOF')
       l = eval(l)
-      if l is None: break
+      if not l: break
 
       dbg(('%s Q=[%10.7f %10.7f %10.7f] dQ=[%10.7f %10.7f %10.7f]')
           %