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Imported from ../bash-2.05a.tar.gz.

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Jari Aalto
2009-09-12 16:46:54 +00:00
parent 28ef6c316f
commit f73dda092b
303 changed files with 37057 additions and 28800 deletions
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COMPAT
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This document details the incompatibilites between this version of bash,
bash-2.05, and the previous widely-available version, bash-1.14 (which
bash-2.05a, and the previous widely-available version, bash-1.14 (which
is still the `standard' version for many Linux distributions). These
were discovered by users of bash-2.x, so this list is not comprehensive.
Some of these incompatibilities occur between the current version and
versions 2.0 and above.
1. Bash now uses a new quoting syntax, $"...", to do locale-specific
string translation. Users who have relied on the (undocumented)
@@ -132,14 +134,7 @@ were discovered by users of bash-2.x, so this list is not comprehensive.
alias -x='chmod a-x' --> alias -- -x='chmod a-x'
13. There was a bug in bash-1.14 and previous versions that caused it to
accept as valid syntax for loops of the form
for f in ; do ... ; done
This should be a syntax error, and bash-2.x treats it as such.
14. The behavior of range specificiers within bracket matching expressions
13. The behavior of range specificiers within bracket matching expressions
in the pattern matcher (e.g., [A-Z]) depends on the current locale,
specifically the value of the LC_COLLATE environment variable. Setting
this variable to C or POSIX will result in the traditional ASCII behavior
@@ -183,7 +178,7 @@ were discovered by users of bash-2.x, so this list is not comprehensive.
with `z' and still allow individual users to change the collation order.
Users may put the above command into their own profiles as well, of course.
15. Bash versions up to 1.14.7 included an undocumented `-l' operator to
14. Bash versions up to 1.14.7 included an undocumented `-l' operator to
the `test/[' builtin. It was a unary operator that expanded to the
length of its string argument. This let you do things like
@@ -198,3 +193,13 @@ were discovered by users of bash-2.x, so this list is not comprehensive.
This operator is not part of the POSIX standard, because one can (and
should) use ${#variable} to get the length of a variable's value.
Bash-2.x does not support it.
15. Bash no longer auto-exports the HOME, PATH, SHELL, TERM, HOSTNAME,
HOSTTYPE, MACHTYPE, or OSTYPE variables.
16. Bash no longer initializes the FUNCNAME, GROUPS, or DIRSTACK variables
to have special behavior if they appear in the initial environment.
17. Bash no longer removes the export attribute from the SSH_CLIENT or
SSH2_CLIENT variables, and no longer attempts to discover whether or
not it has been invoked by sshd in order to run the startup files.