diff hgext/progress.py @ 21859:be4270d27a7e

progress: use 'encoding.trim' to trim output line correctly

Before this patch, 'progress' extension trims output line by directly
slicing byte sequence, but it may split at intermediate multi-byte
sequence.

This patch uses 'encoding.trim' to trim output line correctly, even if
it contains multi-byte characters.

"rm -f loop.pyc" before changing "loop.py" in "test-progress.t"
ensures that re-compilation of "loop.py", even if "loop.py" and
"loop.pyc" have same timestamp in seconds.

--- a/hgext/progress.py	Sun Jul 06 02:56:41 2014 +0900
+++ b/hgext/progress.py	Sun Jul 06 02:56:41 2014 +0900
@@ -41,6 +41,8 @@
 from mercurial.i18n import _
 testedwith = 'internal'
 
+from mercurial import encoding
+
 def spacejoin(*args):
     return ' '.join(s for s in args if s)
 
@@ -180,7 +182,7 @@
             out = spacejoin(head, prog, tail)
         else:
             out = spacejoin(head, tail)
-        sys.stderr.write('\r' + out[:termwidth])
+        sys.stderr.write('\r' + encoding.trim(out, termwidth))
         self.lasttopic = topic
         sys.stderr.flush()