fix problem with saving tty state after running a command with 'bind -x'; builtins that create associative arrays can now convert existing scalar variables to associative arrays

doc/bash.1

@@ -5,12 +5,12 @@
 .\"	Case Western Reserve University
 .\"	chet.ramey@case.edu
 .\"
-.\"	Last Change: Thu Feb 24 14:43:14 EST 2022
+.\"	Last Change: Fri Mar 11 10:16:50 EST 2022
 .\"
 .\" bash_builtins, strip all but Built-Ins section
 .if \n(zZ=1 .ig zZ
 .if \n(zY=1 .ig zY
-.TH BASH 1 "2022 February 24" "GNU Bash 5.2"
+.TH BASH 1 "2022 March 11" "GNU Bash 5.2"
 .\"
 .\" There's some problem with having a `@'
 .\" in a tagged paragraph with the BSD man macros.
@@ -2774,6 +2774,12 @@ interpreted as relative to one greater than the maximum index of
 \fIname\fP, so negative indices count back from the end of the
 array, and an index of \-1 references the last element.
 .PP
+The += operator will append to a array variable when assigning
+using the compound assignment syntax; see
+.SM
+.B PARAMETERS
+above.
+.PP
 Any element of an array may be referenced using
 ${\fIname\fP[\fIsubscript\fP]}.  The braces are required to avoid
 conflicts with pathname expansion.  If
@@ -6081,13 +6087,11 @@ The active region shows the text inserted by bracketed-paste and any
 matching text found by incremental and non-incremental history searches.
 .TP
 .B enable\-bracketed\-paste (On)
-When set to \fBOn\fP, readline will configure the terminal in a way
-that will enable it to insert each paste into the editing buffer as a
-single string of characters, instead of treating each character as if
-it had been read from the keyboard
-and executing any editing commands
-bound to key sequences appearing in the pasted text.
-This will prevent pasted characters from being interpreted as editing commands.
+When set to \fBOn\fP, readline configures the terminal to insert each
+paste into the editing buffer as a single string of characters, instead
+of treating each character as if it had been read from the keyboard.
+This prevents readline from executing any editing commands bound to key
+sequences appearing in the pasted text.
 .TP
 .B enable\-keypad (Off)
 When set to \fBOn\fP, readline will try to enable the application