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fixes to read/wait; revert change that processes $'...' quoting in here-documents unconditionally

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This commit is contained in:
Chet Ramey
2022-01-24 09:37:14 -05:00
parent 2a1c81bf63
commit 3011048a92
38 changed files with 9824 additions and 6133 deletions
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doc/bash.html
+22 -13
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@@ -3,7 +3,7 @@
</HEAD>
<BODY><TABLE WIDTH=100%>
<TR>
<TH ALIGN=LEFT width=33%>BASH(1)<TH ALIGN=CENTER width=33%>2021 December 26<TH ALIGN=RIGHT width=33%>BASH(1)
<TH ALIGN=LEFT width=33%>BASH(1)<TH ALIGN=CENTER width=33%>2022 January 17<TH ALIGN=RIGHT width=33%>BASH(1)
</TR>
</TABLE>
<BR><A HREF="#index">Index</A>
@@ -54,7 +54,7 @@ bash - GNU Bourne-Again SHell
<H3>COPYRIGHT</H3>
Bash is Copyright &#169; 1989-2021 by the Free Software Foundation, Inc.
Bash is Copyright &#169; 1989-2022 by the Free Software Foundation, Inc.
<A NAME="lbAE">&nbsp;</A>
<H3>DESCRIPTION</H3>
@@ -4215,18 +4215,27 @@ matches of <I>pattern</I> are deleted.
If <I>string</I> is null,
matches of <I>pattern</I> are deleted
and the <B>/</B> following <I>pattern</I> may be omitted.
<P>
If the <B>patsub_replacement</B> shell option is enabled using <B>shopt</B>,
any unquoted instances of <B>&amp;</B> in <I>string</I> are replaced with the
matching portion of <I>pattern</I>.
Backslash is used to quote <B>&amp;</B> in <I>string</I>; the backslash is removed
<P>
Quoting any part of <I>string</I> inhibits replacement in the
expansion of the quoted portion, including replacement strings stored
in shell variables.
Backslash will escape <B>&amp;</B> in <I>string</I>; the backslash is removed
in order to permit a literal <B>&amp;</B> in the replacement string.
Users should take care
if <I>string</I> is double-quoted to avoid unwanted interactions between
the backslash and double-quoting.
Pattern substitution performs the check for <B>&amp;</B> after expanding
<I>string</I>; shell programmers should quote backslashes intended to escape
the <B>&amp;</B> and inhibit replacement so they survive any quote removal
performed by the expansion of <I>string</I>.
Backslash can also be used to escape a backslash; <B>\\</B> results in
a literal backslash in the replacement.
Users should take care if <I>string</I> is double-quoted to avoid
unwanted interactions between the backslash and double-quoting, since
backslash has special meaning within double quotes.
Pattern substitution performs the check for unquoted <B>&amp;</B> after
expanding <I>string</I>;
shell programmers should quote any occurrences of <B>&amp;</B>
they want to be taken literally in the replacement
and ensure any instances of <B>&amp;</B> they want to be replaced are unquoted.
<P>
If the
<B>nocasematch</B>
@@ -14617,7 +14626,7 @@ There may be only one active coprocess at a time.
<HR>
<TABLE WIDTH=100%>
<TR>
<TH ALIGN=LEFT width=33%>GNU Bash 5.2<TH ALIGN=CENTER width=33%>2021 December 26<TH ALIGN=RIGHT width=33%>BASH(1)
<TH ALIGN=LEFT width=33%>GNU Bash 5.2<TH ALIGN=CENTER width=33%>2022 January 17<TH ALIGN=RIGHT width=33%>BASH(1)
</TR>
</TABLE>
<HR>
@@ -14723,7 +14732,7 @@ There may be only one active coprocess at a time.
<DT><A HREF="#lbDI">BUGS</A><DD>
</DL>
<HR>
This document was created by man2html from /usr/local/src/bash/bash-20220105/doc/bash.1.<BR>
Time: 11 January 2022 15:02:14 EST
This document was created by man2html from bash.1.<BR>
Time: 18 January 2022 10:57:39 EST
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</HTML>