bzdiff creates empty tmp files and leaves them

The script creates the temporary file unconditionally, but only deletes it if both the targets are .bz2 files.

For Instance:

[10 01:49] kwatram@argon37: ~> lt /tmp | head
total 1940
-rw-r--r-- 1 root root 14440 Apr 10 01:49 pim.info.argon37.nyc.deshaw.com
-rw------- 1 root root 764 Apr 10 01:48 krb5cc_0_4974_cron_TwpGBN
-rw-r--r-- 1 root root 10 Apr 10 01:45 last_healthcheck
-rw------- 1 chenp wheel 609 Apr 10 01:44 krb5cc_13068
drwx------ 6 kwatram wheel 120 Apr 10 01:42 129343213.tmpdir
-rw------- 1 peeqtrd wheel 581 Apr 10 01:34 krb5cc_3050
-rw------- 1 s1trd wheel 609 Apr 10 01:19 krb5cc_3017
-rw------- 1 mouser mouser 611 Apr 10 01:09 krb5cc_5468
-rw------- 1 wongp wheel 609 Apr 10 01:04 krb5cc_13149_6366_sshd_bONoIC6366

[10 01:49] kwatram@argon37: ~> bzdiff Reuters_trade_price_cumVol_Columns.txt Reuters_trade_price_cumVol_Columns.txt.bz2

[10 01:50] kwatram@argon37: ~> lt /tmp | head
total 1964
drwx------ 6 kwatram wheel 140 Apr 10 01:50 129343213.tmpdir
-rw------- 1 root root 764 Apr 10 01:50 krb5cc_0_5394_cron_cE0mBx
-rw------- 1 root root 764 Apr 10 01:50 krb5cc_0_5393_cron_XZVyou
-rw------- 1 root root 764 Apr 10 01:50 krb5cc_0_5397_cron_MNjbPx
-rw------- 1 root root 764 Apr 10 01:50 krb5cc_0_5395_cron_NSJPsu
-rw------- 1 root root 764 Apr 10 01:50 krb5cc_0_5396_cron_rj9Gmu
-rw------- 1 root root 764 Apr 10 01:50 krb5cc_0_5398_cron_iVRwou
-rw-r--r-- 1 root root 14441 Apr 10 01:49 pim.info.argon37.nyc.deshaw.com
-rw------- 1 root root 764 Apr 10 01:48 krb5cc_0_4974_cron_TwpGBN
[10 01:51] kwatram@argon37: /tmp/129343213.tmpdir> lt /tmp/129343213.tmpdir | head
total 0
-rw------- 1 kwatram wheel 0 Apr 10 01:50 bzdiff.1khUHz6QER
drwx------ 2 kwatram wheel 40 Mar 30 07:08 python-eggs.j9P8Eg
drwx------ 2 kwatram wheel 40 Mar 30 06:48 python-eggs.j4uQrK
drwx------ 2 kwatram wheel 40 Mar 30 06:27 python-eggs.Q4hUQp
drwx------ 2 kwatram wheel 40 Mar 29 09:45 python-eggs.nGFDfg

The tmp file bzdiff.1khUHz6QER is not removed.

Thanks,
Mohit

Start by locating the bzdiff script and trace how it creates and removes its temporary file when one target is not compressed. Reproduce the mixed .bz2 and non-.bz2 invocation shown in the issue, then verify that no empty temporary file remains afterward.

Written by the indexing model from the issue text.