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[gawk-devel] document bug: missing offset in script
From: |
Steffen Schuler |
Subject: |
[gawk-devel] document bug: missing offset in script |
Date: |
Sat, 17 Jan 2009 02:06:39 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Greetings.
I found the following bug in subsection 3.8.1 in gawk.texi of gawk-devel
and earlier:
If you apply the script to a text with a one-line C-comment, the closing
comment-delimiter is not removed from the output.
Fix: use an offset (marked by: # FIX)
{
t = index($0, "/*")
if (t != 0) {
# value of `t?? will be "" if t is 1
tmp = substr($0, 1, t - 1)
u = index(substr($0, t + 2), "*/")
offset = t + 2 # FIX
while (u == 0) {
if (getline <= 0) {
m = "unexpected EOF or error"
m = m ":" ERRNO
print m > "/dev/stderr"
exit
}
u = index($0, "*/")
offset = 0 # FIX
}
# substr expression will be "" if */
# occured at end of line
$0 = tmp substr($0, offset + u + 2) # FIX
}
print
}
--
Steffen Schuler (goedel) <address@hidden>
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