From e7f7b7d3088c27b570c48c56663766274528a640 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 29 Nov 2017 23:17:15 +0000
Subject: [PATCH] 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>
---
 findcurve.c | 2 +-
 helixish.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/findcurve.c b/findcurve.c
index 605c60b..6952778 100644
--- 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 1a8c074..ac6d473 100644
--- 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]')
           %
-- 
2.30.2