vandyke.txt

Message-ID: <410A9E73.20301.ivandyke.com>
Date: Fri, 30 Jul 2004 15:16:03 -0400
From: Bryan VanDyke <bryan.ivandyke.com>
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To: mbp.sourcefrog.net
Subject: Possible bug in natural sort strnatcmp.c
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Mr. Pool,

First, thank you for sharing your nice piece of code.

I was trying it out and was getting some weird results. It was giving 
results different than what I wanted. I made a minor modification and 
thought I pass the changes back to you incase they may be of some 
usefullness.

With the files:
01.txt
03.txt
12.txt
2.txt
21.txt

It sorted as:
01.txt
03.txt
2.txt  <---
12.txt
21.txt

I found by changing:

/* skip over leading spaces or zeros */
while (isspace(ca))
     ca = a[++ai];

while (isspace(cb))
   cb = b[++bi];

TO:

/* skip over leading spaces or zeros */
while (isspace(ca) || ca == '0' )
     ca = a[++ai];

while (isspace(cb) || cb == '0' )
     cb = b[++bi];

I get the results I wanted:

01.txt
2.txt  <---
03.txt
12.txt
21.txt

Bryan VanDyke
bryan.ivandyke.com