Update upstream source from tag 'upstream/5.8'

Update to upstream version '5.8'
with Debian dir b7a9cb7b782a12a49dca06e06ca2554b5a95bf93

1 files changed, 20 insertions, 0 deletions

diff --git a/Doc/help/unset b/Doc/help/unset
new file mode 100644
index 000000000..a48687fd5
--- /dev/null
+++ b/Doc/help/unset
@@ -0,0 +1,20 @@
+unset [ -fmv ] name ...
+       Each named parameter is unset.  Local  parameters  remain  local
+       even  if unset; they appear unset within scope, but the previous
+       value will still reappear when the scope ends.
+
+       Individual elements of associative array parameters may be unset
+       by  using  subscript  syntax on name, which should be quoted (or
+       the entire command prefixed with noglob)  to  protect  the  sub-
+       script from filename generation.
+
+       If  the -m flag is specified the arguments are taken as patterns
+       (should be quoted) and all parameters with  matching  names  are
+       unset.  Note that this cannot be used when unsetting associative
+       array elements, as the subscript will be treated as part of  the
+       pattern.
+
+       The  -v  flag  specifies that name refers to parameters. This is
+       the default behaviour.
+
+       unset -f is equivalent to unfunction.