Configuration Information [Automatically generated, do not change]:
Machine: i686
OS: cygwin
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash.exe' -DCONF_HOSTTYPE='i686'
-DCONF_OSTYPE='cygwin' -DCONF_MACHTYPE='i686-pc-cygwin' -DCONF_VENDOR='pc'
-DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H
-DRECYCLES_PIDS -I. -I/tmp/bash-3.1 -I/tmp/bash-3.1/include
-I/tmp/bash-3.1/lib -O2
uname output: CYGWIN_NT-5.1 pechtcha 1.7.0(0.159/4/2) 2006-07-29 22:39 i686
Cygwin
Machine Type: i686-pc-cygwin
Bash Version: 3.1
Patch Level: 17
Release Status: release
Description:
Attempting to embed a substring variable expansion that produces
an empty string in another string results in an extra \177
character. A separately quoted substring expression is fine.
Also observed in bash 3.1 patchlevel 16 on Debian.
Repeat-By:
str='12'
echo -n "${str:2}" | od -c
echo -n "+${str:2}" | od -c
echo -n "+""${str:2}" | od -c
Observe that the first "echo" prints nothing, the last echo prints
a lone '+', but the second echo prints a '+' followed by \177.
This happens for strings of any length, as long as the substring
count is exactly equal to the length of the string (or use
echo -n "+${str:${#str}}" | od -c
).
Fix:
Apparently, a call to remove_quoted_nulls() is missing somewhere.
Haven't investigated further yet.
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_ [EMAIL PROTECTED] | [EMAIL PROTECTED]
ZZZzz /,`.-'`' -. ;-;;,_ Igor Peshansky, Ph.D. (name changed!)
|,4- ) )-,_. ,\ ( `'-' old name: Igor Pechtchanski
'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
"Las! je suis sot... -Mais non, tu ne l'es pas, puisque tu t'en rends compte."
"But no -- you are no fool; you call yourself a fool, there's proof enough in
that!" -- Rostand, "Cyrano de Bergerac"
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