commit bash-20160819 snapshot

doc/bash.1

@@ -5,12 +5,12 @@
 .\"	Case Western Reserve University
 .\"	chet.ramey@case.edu
 .\"
-.\"	Last Change: Sun May 29 13:48:21 EDT 2016
+.\"	Last Change: Sun Aug 21 14:47:11 EDT 2016
 .\"
 .\" bash_builtins, strip all but Built-Ins section
 .if \n(zZ=1 .ig zZ
 .if \n(zY=1 .ig zY
-.TH BASH 1 "2016 May 29" "GNU Bash 4.4"
+.TH BASH 1 "2016 August 21" "GNU Bash 4.4"
 .\"
 .\" There's some problem with having a `@'
 .\" in a tagged paragraph with the BSD man macros.
@@ -4330,6 +4330,11 @@ Conditional expressions are used by the \fB[[\fP compound command and
 the \fBtest\fP and \fB[\fP builtin commands to test file attributes
 and perform string and arithmetic comparisons.
 Expressions are formed from the following unary or binary primaries.
+\fBBash\fP handles several filenames specially when they are used in
+expressions.
+If the operating system on which \fBbash\fP is running provides these
+special files, bash will use them; otherwise it will emulate them
+internally with this behavior:
 If any \fIfile\fP argument to one of the primaries is of the form
 \fI/dev/fd/n\fP, then file descriptor \fIn\fP is checked.
 If the \fIfile\fP argument to one of the primaries is one of