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commit bash-20100826 snapshot

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Chet Ramey
2011-12-12 22:04:56 -05:00
parent d417af4fb3
commit dc60d4e0c2
17 changed files with 850 additions and 88 deletions
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doc/bashref.texi
+15 -14
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@@ -1135,7 +1135,7 @@ command (@pxref{Redirections}).
The file descriptors can be utilized as arguments to shell commands
and redirections using standard word expansions.
The process id of the shell spawned to execute the coprocess is
The process ID of the shell spawned to execute the coprocess is
available as the value of the variable @var{NAME}_PID.
The @code{wait}
builtin command may be used to wait for the coprocess to terminate.
@@ -1382,7 +1382,7 @@ In the context where an assignment statement is assigning a value
to a shell variable or array index (@pxref{Arrays}), the @samp{+=}
operator can be used to
append to or add to the variable's previous value.
When @samp{+=} is applied to a variable for which the integer attribute
When @samp{+=} is applied to a variable for which the @var{integer} attribute
has been set, @var{value} is evaluated as an arithmetic expression and
added to the variable's current value, which is also evaluated.
When @samp{+=} is applied to an array variable using compound assignment
@@ -1717,7 +1717,7 @@ Bash uses the value of the variable formed from the rest of
expanded and that value is used in the rest of the substitution, rather
than the value of @var{parameter} itself.
This is known as @code{indirect expansion}.
The exceptions to this are the expansions of $@{!@var{prefix*}@}
The exceptions to this are the expansions of $@{!@var{prefix}@*}
and $@{!@var{name}[@@]@}
described below.
The exclamation point must immediately follow the left brace in order to
@@ -3061,7 +3061,7 @@ invocation if a new set of parameters is to be used.
When the end of options is encountered, @code{getopts} exits with a
return value greater than zero.
@env{OPTIND} is set to the index of the first non-option argument,
and @code{name} is set to @samp{?}.
and @var{name} is set to @samp{?}.
@code{getopts}
normally parses the positional parameters, but if more arguments are
@@ -4141,8 +4141,8 @@ parameters, or to display the names and values of shell variables.
@item set
@btindex set
@example
set [--abefhkmnptuvxBCEHPT] [-o @var{option}] [@var{argument} @dots{}]
set [+abefhkmnptuvxBCEHPT] [+o @var{option}] [@var{argument} @dots{}]
set [--abefhkmnptuvxBCEHPT] [-o @var{option-name}] [@var{argument} @dots{}]
set [+abefhkmnptuvxBCEHPT] [+o @var{option-name}] [@var{argument} @dots{}]
@end example
If no options or arguments are supplied, @code{set} displays the names
@@ -4503,18 +4503,19 @@ easy re-editing of multi-line commands.
@item compat31
If set, Bash
changes its behavior to that of version 3.1 with respect to quoted
arguments to the conditional command's =~ operator.
arguments to the conditional command's @samp{=~} operator.
@item compat32
If set, Bash
changes its behavior to that of version 3.2 with respect to locale-specific
string comparison when using the conditional command's < and > operators.
string comparison when using the conditional command's @samp{<} and @samp{>}
operators.
@item compat40
If set, Bash
changes its behavior to that of version 4.0 with respect to locale-specific
string comparison when using the conditional command's < and > operators
and the effect of interrupting a command list.
string comparison when using the conditional command's @samp{<} and @samp{>}
operators and the effect of interrupting a command list.
@item compat41
If set, Bash, when in posix mode, treats a single quote in a double-quoted
@@ -4850,13 +4851,13 @@ starts up, each shell option in the list will be enabled before
reading any startup files. This variable is readonly.
@item BASHPID
Expands to the process id of the current Bash process.
Expands to the process ID of the current Bash process.
This differs from @code{$$} under certain circumstances, such as subshells
that do not require Bash to be re-initialized.
@item BASH_ALIASES
An associative array variable whose members correspond to the internal
list of aliases as maintained by the @code{alias} builtin
list of aliases as maintained by the @code{alias} builtin.
(@pxref{Bourne Shell Builtins}).
Elements added to this array appear in the alias list; unsetting array
elements cause aliases to be removed from the alias list.
@@ -5728,7 +5729,7 @@ No other startup files are read.
@subsubheading Invoked by remote shell daemon
Bash attempts to determine when it is being run with its standard input
connected to a network connection, as if by the remote shell
connected to a network connection, as when executed by the remote shell
daemon, usually @code{rshd}, or the secure shell daemon @code{sshd}.
If Bash determines it is being run in
this fashion, it reads and executes commands from @file{~/.bashrc}, if that
@@ -6132,7 +6133,7 @@ The value of a variable is evaluated as an arithmetic expression
when it is referenced, or when a variable which has been given the
@var{integer} attribute using @samp{declare -i} is assigned a value.
A null value evaluates to 0.
A shell variable need not have its integer attribute turned on
A shell variable need not have its @var{integer} attribute turned on
to be used in an expression.
Constants with a leading 0 are interpreted as octal numbers.