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commit bash-20041202 snapshot

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Chet Ramey
2011-12-03 13:40:44 -05:00
parent 54cdd75ae4
commit 76a8d78dfd
9 changed files with 91 additions and 50 deletions
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doc/bashref.texi
+13 -8
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@@ -1118,12 +1118,12 @@ The first element of the @env{FUNCNAME} variable is set to the
name of the function while the function is executing.
All other aspects of the shell execution
environment are identical between a function and its caller
with the exception that the @env{DEBUG} trap
below) is not inherited unless the function has been given the
with the exception that the @env{DEBUG} and @env{RETURN} traps
are not inherited unless the function has been given the
@code{trace} attribute using the @code{declare} builtin or
the @code{-o functrace} option has been enabled with
the @code{set} builtin,
(in which case all functions inherit the @code{DEBUG} trap).
(in which case all functions inherit the @env{DEBUG} and @env{RETURN} traps).
@xref{Bourne Shell Builtins}, for the description of the
@code{trap} builtin.
@@ -3283,7 +3283,8 @@ by subsequent assignment statements or unset.
@item -t
Give each @var{name} the @code{trace} attribute.
Traced functions inherit the @code{DEBUG} trap from the calling shell.
Traced functions inherit the @code{DEBUG} and @code{RETURN} traps from
the calling shell.
The trace attribute has no special meaning for variables.
@item -x
@@ -4126,9 +4127,11 @@ $ cd ..; pwd
@end example
@item -T
If set, any trap on @code{DEBUG} is inherited by shell functions, command
substitutions, and commands executed in a subshell environment.
The @code{DEBUG} trap is normally not inherited in such cases.
If set, any trap on @code{DEBUG} and @code{RETURN} are inherited by
shell functions, command substitutions, and commands executed
in a subshell environment.
The @code{DEBUG} and @code{RETURN} traps are normally not inherited
in such cases.
@item --
If no arguments follow this option, then the positional parameters are
@@ -7184,7 +7187,9 @@ The @code{trap} builtin (@pxref{Bourne Shell Builtins}) allows a
Commands specified with an @code{RETURN} trap are executed before
execution resumes after a shell function or a shell script executed with
@code{.} or @code{source} returns.
The @code{RETURN} trap is not inherited by shell functions.
The @code{RETURN} trap is not inherited by shell functions unless the
function has been given the @code{trace} attribute or the
@code{functrace} option has been enabled using the @code{shopt} builtin.
@item
The Bash @code{type} builtin is more extensive and gives more information