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commit bash-20151120 snapshot

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Chet Ramey
2015-12-01 11:28:48 -05:00
parent f9b024c839
commit e6f5e0c858
20 changed files with 232 additions and 79 deletions
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doc/bashref.texi
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@@ -450,6 +450,11 @@ Enclosing characters in double quotes (@samp{"}) preserves the literal value
of all characters within the quotes, with the exception of
@samp{$}, @samp{`}, @samp{\},
and, when history expansion is enabled, @samp{!}.
When the shell is in
@sc{posix} mode (@pxref{Bash POSIX Mode}),
the @samp{!} has no special meaning
within double quotes, even when history expansion is enabled.
The characters
The characters @samp{$} and @samp{`}
retain their special meaning within double quotes (@pxref{Shell Expansions}).
The backslash retains its special meaning only when followed by one of
@@ -5046,7 +5051,10 @@ bash-4.1 and later use the current locale's collation sequence and strcoll(3).
If set, Bash
changes its behavior to that of version 3.2 with respect to locale-specific
string comparison when using the @code{[[}
conditional command's @samp{<} and @samp{>} operators (see previous item).
conditional command's @samp{<} and @samp{>} operators (see previous item)
and the effect of interrupting a command list.
Bash versions 3.2 and earlier continue with the next command in the list
after one terminates due to an interrupt.
@item compat40
If set, Bash
@@ -5704,7 +5712,7 @@ The numeric effective user id of the current user. This variable
is readonly.
@item EXECIGNORE
A colon-separated list of extended glob patterns (@pxref{Pattern Matching})
A colon-separated list of shell patterns (@pxref{Pattern Matching})
defining the list of filenames to be ignored by command search.
Files whose full pathnames match one of these patterns are not considered
executable files for the purposes of completion and command execution.
@@ -5712,6 +5720,8 @@ This does not affect the behavior of the @code{[}, @code{test}, and @code{[[}
commands.
Use this variable to ignore shared library files that have the executable
bit set, but are not executable files.
The pattern matching honors the setting of the @code{extglob} shell
option.
@item FCEDIT
The editor used as a default by the @option{-e} option to the @code{fc}
@@ -5756,6 +5766,8 @@ be ignored by filename expansion.
If a filename matched by a filename expansion pattern also matches one
of the patterns in @env{GLOBIGNORE}, it is removed from the list
of matches.
The pattern matching honors the setting of the @code{extglob} shell
option.
@item GROUPS
An array variable containing the list of groups of which the current
@@ -5832,6 +5844,8 @@ before attempting a match.
The second and subsequent lines of a multi-line compound command are
not tested, and are added to the history regardless of the value of
@env{HISTIGNORE}.
The pattern matching honors the setting of the @code{extglob} shell
option.
@env{HISTIGNORE} subsumes the function of @env{HISTCONTROL}. A
pattern of @samp{&} is identical to @code{ignoredups}, and a
@@ -7305,9 +7319,7 @@ is stopped is `Stopped(@var{signame})', where @var{signame} is, for
example, @code{SIGTSTP}.
@item
The @code{bg} builtin uses the required format to describe each job placed
in the background, which does not include an indication of whether the job
is the current or previous job.
Alias expansion is always enabled, even in non-interactive shells.
@item
Reserved words appearing in a context where reserved words are recognized
@@ -7327,40 +7339,10 @@ the normal Bash files.
Tilde expansion is only performed on assignments preceding a command
name, rather than on all assignment statements on the line.
@item
The @code{command} builtin does not prevent builtins that take assignment
statements as arguments from expanding them as assignment statements;
when not in @sc{posix} mode, assignment builtins lose their assignment
statement expansion properties when preceded by @code{command}.
@item
The default history file is @file{~/.sh_history} (this is the
default value of @env{$HISTFILE}).
@item
The output of @samp{kill -l} prints all the signal names on a single line,
separated by spaces, without the @samp{SIG} prefix.
@item
The @code{kill} builtin does not accept signal names with a @samp{SIG}
prefix.
@item
Non-interactive shells exit if @var{filename} in @code{.} @var{filename}
is not found.
@item
Non-interactive shells exit if a syntax error in an arithmetic expansion
results in an invalid expression.
@item
Non-interactive shells exit on word expansion errors.
@item
Non-interactive shells exit if there is a syntax error in a script read
with the @code{.} or @code{source} builtins, or in a string processed by
the @code{eval} builtin.
@item
Redirection operators do not perform filename expansion on the word
in the redirection unless the shell is interactive.
@@ -7405,6 +7387,10 @@ not have to appear as matched pairs.
The parser does not recognize @code{time} as a reserved word if the next
token begins with a @samp{-}.
@item
The @samp{!} character does not introduce history expansion within a
double-quoted string, even if the @code{histexpand} option is enabled.
@item
If a @sc{posix} special builtin returns an error status, a
non-interactive shell exits. The fatal errors are those listed in
@@ -7429,6 +7415,22 @@ A non-interactive shell exits with an error status if the iteration
variable in a @code{for} statement or the selection variable in a
@code{select} statement is a readonly variable.
@item
Non-interactive shells exit if @var{filename} in @code{.} @var{filename}
is not found.
@item
Non-interactive shells exit if a syntax error in an arithmetic expansion
results in an invalid expression.
@item
Non-interactive shells exit on word expansion errors.
@item
Non-interactive shells exit if there is a syntax error in a script read
with the @code{.} or @code{source} builtins, or in a string processed by
the @code{eval} builtin.
@item
Process substitution is not available.
@@ -7445,6 +7447,25 @@ Assignment statements preceding shell function calls persist in the
shell environment after the function returns, as if a @sc{posix}
special builtin command had been executed.
@item
The @code{command} builtin does not prevent builtins that take assignment
statements as arguments from expanding them as assignment statements;
when not in @sc{posix} mode, assignment builtins lose their assignment
statement expansion properties when preceded by @code{command}.
@item
The @code{bg} builtin uses the required format to describe each job placed
in the background, which does not include an indication of whether the job
is the current or previous job.
@item
The output of @samp{kill -l} prints all the signal names on a single line,
separated by spaces, without the @samp{SIG} prefix.
@item
The @code{kill} builtin does not accept signal names with a @samp{SIG}
prefix.
@item
The @code{export} and @code{readonly} builtin commands display their
output in the format required by @sc{posix}.
@@ -7473,9 +7494,6 @@ the @option{-e} option from the parent shell.
When the @code{inherit_errexit} option is not enabled,
Bash clears the @option{-e} option in such subshells.
@item
Alias expansion is always enabled, even in non-interactive shells.
@item
When the @code{alias} builtin displays alias definitions, it does not
display them with a leading @samp{alias } unless the @option{-p} option
@@ -7793,7 +7811,7 @@ of the shell, the return status is 127.
@item disown
@btindex disown
@example
disown [-ar] [-h] [@var{jobspec} @dots{}]
disown [-ar] [-h] [@var{jobspec} @dots{} | @var{pid} @dots{} ]
@end example
Without options, remove each @var{jobspec} from the table of