documentation updates for arrayname[0]; update trace/debug order for some compound commands

doc/bash.1

@@ -2864,7 +2864,9 @@ Any element of an array may be referenced using
 ${\fIname\fP[\fIsubscript\fP]}.  The braces are required to avoid
 conflicts with pathname expansion.  If
 \fIsubscript\fP is \fB@\fP or \fB*\fP, the word expands to
-all members of \fIname\fP.  These subscripts differ only when the
+all members of \fIname\fP,
+unless noted in the description of a builtin or word expansion.
+These subscripts differ only when the
 word appears within double quotes.  If the word is double-quoted,
 ${\fIname\fP[*]} expands to a single
 word with the value of each array member separated by the first
@@ -4978,6 +4980,12 @@ builtin below.
 True if the shell variable
 .I varname
 is set (has been assigned a value).
+If \fIvarname\fP is an indexed
+array variable name subscripted by \fI@\fP or \fI*\fP,
+this returns true if the array has any set elements.
+If \fIvarname\fP is an associative
+array variable name subscripted by \fI@\fP or \fI*\fP,
+this returns true if an element with that key is set.
 .TP
 .B \-R \fIvarname\fP
 True if the shell variable

doc/bashref.texi

@@ -1759,7 +1759,7 @@ When @samp{+=} is applied to an array variable using compound assignment
 (@pxref{Arrays}), the
 variable's value is not unset (as it is when using @samp{=}), and new
 values are appended to the array beginning at one greater than the array's
-maximum index (for indexed arrays),  or added as additional key-value pairs
+maximum index (for indexed arrays), or added as additional key-value pairs
 in an associative array.
 When applied to a string-valued variable, @var{value} is expanded and
 appended to the variable's value.
@@ -7664,6 +7664,12 @@ option to the @code{set} builtin (@pxref{The Set Builtin}).
 
 @item -v @var{varname}
 True if the shell variable @var{varname} is set (has been assigned a value).
+If @var{varname} is an indexed
+array variable name subscripted by @samp{@@} or @samp{*},
+this returns true if the array has any set elements.
+If @var{varname} is an associative
+array variable name subscripted by @samp{@@} or @samp{*},
+this returns true if an element with that key is set.
 
 @item -R @var{varname}
 True if the shell variable @var{varname} is set and is a name reference.
@@ -7983,7 +7989,9 @@ Any element of an array may be referenced using
 The braces are required to avoid
 conflicts with the shell's filename expansion operators.  If the
 @var{subscript} is @samp{@@} or @samp{*}, the word expands to all members
-of the array @var{name}.  These subscripts differ only when the word
+of the array @var{name}, unless otherwise noted in the description of a
+builtin or word expansion.
+These subscripts differ only when the word
 appears within double quotes.
 If the word is double-quoted,
 @code{$@{@var{name}[*]@}} expands to a single word with

doc/version.texi

@@ -2,10 +2,10 @@
 Copyright (C) 1988-2023 Free Software Foundation, Inc.
 @end ignore
 
-@set LASTCHANGE Tue Aug 15 16:02:41 EDT 2023
+@set LASTCHANGE Fri Aug 25 11:58:00 EDT 2023
 
 @set EDITION 5.3
 @set VERSION 5.3
 
-@set UPDATED 15 August 2023
+@set UPDATED 25 August 2023
 @set UPDATED-MONTH August 2023