commit bash-20190712 snapshot

doc/bash.1

@@ -5,12 +5,12 @@
 .\"	Case Western Reserve University
 .\"	chet.ramey@case.edu
 .\"
-.\"	Last Change: Fri Jun 21 10:26:44 EDT 2019
+.\"	Last Change: Mon Jul  8 15:14:50 EDT 2019
 .\"
 .\" bash_builtins, strip all but Built-Ins section
 .if \n(zZ=1 .ig zZ
 .if \n(zY=1 .ig zY
-.TH BASH 1 "2019 June 21" "GNU Bash 5.0"
+.TH BASH 1 "2019 July 8" "GNU Bash 5.0"
 .\"
 .\" There's some problem with having a `@'
 .\" in a tagged paragraph with the BSD man macros.
@@ -1563,6 +1563,10 @@ subsequently reset.
 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
+.B BASH_COMMAND
+is unset, it loses its special properties, even if it is
+subsequently reset.
 .TP
 .B BASH_EXECUTION_STRING
 The command argument to the \fB\-c\fP invocation option.
@@ -1613,6 +1617,10 @@ The shell function
 Incremented by one within each subshell or subshell environment when
 the shell begins executing in that environment.
 The initial value is 0.
+If
+.B BASH_SUBSHELL
+is unset, it loses its special properties, even if it is
+subsequently reset.
 .TP
 .B BASH_VERSINFO
 A readonly array variable whose members hold version information for
@@ -10762,22 +10770,40 @@ Each unset variable or function is removed from the environment
 passed to subsequent commands.
 If any of
 .SM
+.BR BASH_ALIASES ,
+.SM
+.BR BASH_ARGV0 ,
+.SM
+.BR BASH_CMDS ,
+.SM
+.BR BASH_COMMAND ,
+.SM
+.BR BASH_SUBSHELL ,
+.SM
+.BR BASHPID ,
+.SM
 .BR COMP_WORDBREAKS ,
 .SM
-.BR RANDOM ,
+.BR DIRSTACK ,
 .SM
-.BR SECONDS ,
+.BR EPOCHREALTIME ,
 .SM
-.BR LINENO ,
-.SM
-.BR HISTCMD ,
+.BR EPOCHSECONDS ,
 .SM
 .BR FUNCNAME ,
 .SM
 .BR GROUPS ,
+.SM
+.BR HISTCMD ,
+.SM
+.BR LINENO ,
+.SM
+.BR RANDOM ,
+.SM
+.BR SECONDS ,
 or
 .SM
-.B DIRSTACK
+.B SRANDOM
 are unset, they lose their special properties, even if they are
 subsequently reset.  The exit status is true unless a
 .I name