fix. Don't search correct indentation past EOF.

setup.cfg

@@ -1,5 +1,5 @@
 [metadata]
-version = 0.5.2
+version = 0.5.3
 name = yamlfixer-opt-nc
 description = automates the fixing of problems reported by yamllint
 long_description = file: README.md

yamlfixer/__init__.py

@@ -21,7 +21,7 @@
 
 import time
 
-__version__ = "0.5.2"
+__version__ = "0.5.3"
 __author__ = "OPT-NC"
 __license__ = "GPLv3+"
 __copyright__ = "Copyright (C) 2021-%s %s" % (time.strftime("%Y",

yamlfixer/problemfixer.py

@@ -52,19 +52,17 @@ def __call__(self):
     def get_indentation(self, offset=0):
         """Returns the indentation of the current (possibly offset) line."""
         lnum = self.linenum
+        nblines = len(self.ffixer.lines)
         if offset:
             direction = int(offset/abs(offset))
             lnum += direction
-            try:
-                while offset:
-                    while (0 < lnum < len(self.ffixer.lines)) \
-                      and not self.ffixer.lines[lnum].strip():
-                        lnum += direction
-                    offset -= direction
-            except IndexError:
-                # We're past EOF, so just take the last line of the file
-                # which is most probably empty anyway...
-                lnum = -1
+            while offset:
+                while (0 < lnum < nblines) and not self.ffixer.lines[lnum].strip():
+                    lnum += direction
+                offset -= direction
+        if lnum == nblines:
+            # We are past EOF so just take the last line's indentation
+            lnum = -1
         line = self.ffixer.lines[lnum]
         return len(line) - len(line.lstrip())