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commit bash-20190712 snapshot

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Chet Ramey
2019-07-15 09:15:15 -04:00
parent ea578790a9
commit e2169ae94e
30 changed files with 8890 additions and 8580 deletions
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doc/bashref.html
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@@ -1,9 +1,9 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- This text is a brief description of the features that are present in
the Bash shell (version 5.0, 21 June 2019).
the Bash shell (version 5.0, 8 July 2019).
This is Edition 5.0, last updated 21 June 2019,
This is Edition 5.0, last updated 8 July 2019,
of The GNU Bash Reference Manual,
for Bash, Version 5.0.
@@ -284,10 +284,10 @@ Next: <a href="#Introduction" accesskey="n" rel="next">Introduction</a>, Previou
<h1 class="top">Bash Features</h1>
<p>This text is a brief description of the features that are present in
the Bash shell (version 5.0, 21 June 2019).
the Bash shell (version 5.0, 8 July 2019).
The Bash home page is <a href="http://www.gnu.org/software/bash/">http://www.gnu.org/software/bash/</a>.
</p>
<p>This is Edition 5.0, last updated 21 June 2019,
<p>This is Edition 5.0, last updated 8 July 2019,
of <cite>The GNU Bash Reference Manual</cite>,
for <code>Bash</code>, Version 5.0.
</p>
@@ -3581,7 +3581,8 @@ Next: <a href="#Command-Search-and-Execution" accesskey="n" rel="next">Command S
<a name="index-command-expansion"></a>
<p>When a simple command is executed, the shell performs the following
expansions, assignments, and redirections, from left to right.
expansions, assignments, and redirections, from left to right, in
the following order.
</p>
<ol>
<li> The words that the parser has marked as variable assignments (those
@@ -4608,6 +4609,8 @@ If no options are supplied, each <var>name</var> refers to a variable; if
there is no variable by that name, any function with that name is
unset.
Readonly variables and functions may not be unset.
Some shell variables lose their special behavior if they are unset; such
behavior is noted in the description of the individual variables.
The return status is zero unless a <var>name</var> is readonly.
</p></dd>
</dl>
@@ -6689,6 +6692,9 @@ subsequently reset.
<dd><p>The command currently being executed or about to be executed, unless the
shell is executing a command as the result of a trap,
in which case it is the command executing at the time of the trap.
If <code>BASH_COMMAND</code>
is unset, it loses its special properties, even if it is
subsequently reset.
</p>
</dd>
<dt><code>BASH_COMPAT</code>
@@ -6773,6 +6779,9 @@ The shell function <code>${FUNCNAME[$i]}</code> is defined in the file
<dd><p>Incremented by one within each subshell or subshell environment when
the shell begins executing in that environment.
The initial value is 0.
If <code>BASH_SUBSHELL</code>
is unset, it loses its special properties, even if it is
subsequently reset.
</p>
</dd>
<dt><code>BASH_VERSINFO</code>
@@ -6910,7 +6919,8 @@ completion function.
</dt>
<dd><p>The set of characters that the Readline library treats as word
separators when performing word completion.
If <code>COMP_WORDBREAKS</code> is unset, it loses its special properties,
If <code>COMP_WORDBREAKS</code>
is unset, it loses its special properties,
even if it is subsequently reset.
</p>
</dd>
@@ -6951,7 +6961,8 @@ Assigning to members of this array variable may be used to modify
directories already in the stack, but the <code>pushd</code> and <code>popd</code>
builtins must be used to add and remove directories.
Assignment to this variable will not change the current directory.
If <code>DIRSTACK</code> is unset, it loses its special properties, even if
If <code>DIRSTACK</code>
is unset, it loses its special properties, even if
it is subsequently reset.
</p>
</dd>
@@ -6978,7 +6989,8 @@ since the Unix Epoch as a floating point value with micro-second granularity
(see the documentation for the C library function <var>time</var> for the
definition of Epoch).
Assignments to <code>EPOCHREALTIME</code> are ignored.
If <code>EPOCHREALTIME</code> is unset, it loses its special properties, even if
If <code>EPOCHREALTIME</code>
is unset, it loses its special properties, even if
it is subsequently reset.
</p>
</dd>
@@ -6989,7 +7001,8 @@ it is subsequently reset.
since the Unix Epoch (see the documentation for the C library function
<var>time</var> for the definition of Epoch).
Assignments to <code>EPOCHSECONDS</code> are ignored.
If <code>EPOCHSECONDS</code> is unset, it loses its special properties, even if
If <code>EPOCHSECONDS</code>
is unset, it loses its special properties, even if
it is subsequently reset.
</p>
</dd>
@@ -7047,7 +7060,8 @@ The bottom-most element (the one with the highest index)
is <code>&quot;main&quot;</code>.
This variable exists only when a shell function is executing.
Assignments to <code>FUNCNAME</code> have no effect.
If <code>FUNCNAME</code> is unset, it loses its special properties, even if
If <code>FUNCNAME</code>
is unset, it loses its special properties, even if
it is subsequently reset.
</p>
<p>This variable can be used with <code>BASH_LINENO</code> and <code>BASH_SOURCE</code>.
@@ -7085,7 +7099,8 @@ option.
<dd><p>An array variable containing the list of groups of which the current
user is a member.
Assignments to <code>GROUPS</code> have no effect.
If <code>GROUPS</code> is unset, it loses its special properties, even if it is
If <code>GROUPS</code>
is unset, it loses its special properties, even if it is
subsequently reset.
</p>
</dd>
@@ -7110,7 +7125,9 @@ parser to treat the rest of the line as a comment.
<a name="index-HISTCMD"></a>
</dt>
<dd><p>The history number, or index in the history list, of the current
command. If <code>HISTCMD</code> is unset, it loses its special properties,
command.
If <code>HISTCMD</code>
is unset, it loses its special properties,
even if it is subsequently reset.
</p>
</dd>
@@ -7318,6 +7335,9 @@ formatting.
<a name="index-LINENO"></a>
</dt>
<dd><p>The line number in the script or shell function currently executing.
If <code>LINENO</code>
is unset, it loses its special properties, even if it is
subsequently reset.
</p>
</dd>
<dt><code>LINES</code>
@@ -7461,6 +7481,9 @@ The default is &lsquo;<samp>+ </samp>&rsquo;.
<dd><p>Each time this parameter is referenced, it expands to a random integer
between 0 and 32767. Assigning a value to this
variable seeds the random number generator.
If <code>RANDOM</code>
is unset, it loses its special properties, even if it is
subsequently reset.
</p>
</dd>
<dt><code>READLINE_LINE</code>
@@ -7491,6 +7514,9 @@ shell was started. Assignment to this variable resets
the count to the value assigned, and the expanded value
becomes the value assigned plus the number of seconds
since the assignment.
If <code>SECONDS</code>
is unset, it loses its special properties,
even if it is subsequently reset.
</p>
</dd>
<dt><code>SHELL</code>
@@ -7530,7 +7556,8 @@ support <samp>/dev/urandom</samp> or <code>arc4random</code>, so each returned n
has no relationship to the numbers preceding it.
The random number generator cannot be seeded, so assignments to this
variable have no effect.
If <code>SRANDOM</code> is unset, it loses its special properties,
If <code>SRANDOM</code>
is unset, it loses its special properties,
even if it is subsequently reset.
</p>
</dd>