Dear Yutaka,

I think that compare did not execute well on these two rather small files:

SecurityID AsOf_Date Previous List Updated List
'00141010' '2010-12-23' Primary 'Suspended'
'00549014' '2010-12-23' Suspended 'Maintenance'
'01100874' '2010-12-23' Primary 'Suspended'
'01121508' '2010-12-23' 'Primary'
'01121516' '2010-12-23' 'Primary'
'01121771' '2010-12-23' 'Primary'
'04110219' '2010-12-23' Primary 'Suspended'
'04110227' '2010-12-23' Primary 'Suspended'
'05490107' '2010-12-23' Suspended 'Maintenance'
'05490115' '2010-12-23' Suspended 'Primary'
'05490123' '2010-12-23' Suspended 'Primary'
'05490156' '2010-12-23' Suspended 'Primary'
'01117928' '2010-12-23' 'Delisted'
'01117936' '2010-12-23' 'Delisted'
'01117944' '2010-12-23' 'Delisted'
'01117951' '2010-12-23' 'Delisted'
'01117969' '2010-12-23' 'Delisted'
'01117977' '2010-12-23' 'Delisted'
'01117985' '2010-12-23' 'Delisted'
'01117993' '2010-12-23' 'Delisted'

And this one:

SecurityID AsOf_Date Previous List Updated List
'01121508' '2010-12-23' 'Primary'
'01121516' '2010-12-23' 'Primary'
'01121771' '2010-12-23' 'Primary'

These are TSV files and the three data line in the second file are lines 5-7 in the first file. However, EmEditor failed to detect it.

FYI
Meir

Hello mguttman,

I reproduced this issue. I will try to find what causes this issue.

Thank you!

----------------
Yutaka Emura
Developer of EmEditor
http://www.emeditor.com/