On 7/14/2014 11:12 AM, Roy Smith wrote:
Does anybody know of a wdiff-like tool
(http://www.gnu.org/software/wdiff/) which is aware of python syntax and
can show token changes instead of word changes.  Wdiff is can turn

-    if not metar.is
<http://metar.is>_in_temp_range_f(situation.weather.low_temperature,
situation.weather.high_temperature):
+    if not info.is
<http://info.is>_in_temp_range_f(situation.weather.low_temperature,
situation.weather.high_temperature):

into

     if not
[-metar.is_in_temp_range_f(situation.weather.low_temperature,-]
{+info.is_in_temp_range_f(situation.weather.low_temperature,+}
situation.weather.high_temperature):

but what I really want is:

     if not
[-metar-]{+info+}.is_in_temp_range_f(situation.weather.low_temperature,
situation.weather.high_temperature):

which makes it more obvious that the change is just the one token.  Does
such a tool exist?

The under-known difflib.differ shows within line differences.
Your example would look like:

-    if not metar.is_in_temp_range_f(...):
?           ^^^^^
+    if not info.is_in_temp_range_f
?           ^^^^

Deletions and insertions are indicated with '-' and '+'.
I use this routinely, when backporting patches, in a script that differs the 2.7 and 3.4 versions of repository files.

--
Terry Jan Reedy

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