Added signal catching and handling in C and Cython

python/obitools3/commands/grep.pyx

@@ -13,6 +13,7 @@ from functools import reduce
 import time
 import re
 import sys
+from cpython.exc cimport PyErr_CheckSignals
 
  
 __title__="Grep view lines that match the given predicates"
@@ -308,6 +309,7 @@ def run(config):
     filter = Filter_generator(config["grep"], tax_filter)
     selection = Line_selection(i_view)
     for i in range(len(i_view)):
+        PyErr_CheckSignals()
         pb(i)
         line = i_view[i]