Support rc files without leading dots

This adds the `-U` option to lsrc(1), rcup(1), and rcdn(1) commands; its
argument is an exclusion pattern. Any file matching this pattern is
symlinked without the leading dot.

There is also a `-u` option to undo a `-U`. The `UNDOTTED` setting in
rcrc(5) can be used to set it permanently.

The mkrc(1) command has `-U` and `-u` flags. They take no argument.

1 files changed, 25 insertions, 0 deletions

diff --git a/man/rcdn.1 b/man/rcdn.1
index 21261fd..10543e9 100644
--- a/man/rcdn.1
+++ b/man/rcdn.1
@@ -13,6 +13,8 @@
 .Op Fl S Ar excl_pat
 .Op Fl s Ar excl_pat
 .Op Fl t Ar tag
+.Op Fl U Ar excl_pat
+.Op Fl u Ar excl_pat
 .Op Fl x Ar excl_pat
 .Op Ar files ...
 .Sh DESCRIPTION
@@ -87,6 +89,29 @@ This can be repeated.
 .It Fl t Ar TAG
 remove dotfiles according to
 .Ar TAG
+.It Fl U Ar EXCL_PAT
+any rc file or directory that matches
+.Ar EXCL_PAT
+is considered to have been installed without a leading dot when removing them.
+Must be specified for rc files or directories that were indeed installed
+without a leading dot. This can be repeated. See the
+documentation of the
+.Fl U
+option in
+.Xr lsrc 1
+for more information.
+.It Fl u Ar EXCL_PAT
+any rc file or directory that matches
+.Ar EXCL_PAT
+is considered to have been installed with a leading dot when removing them.
+This is the default, and is the opposite of
+.Fl U .
+This can be repeated. See the
+documentation of the
+.Fl u
+option in
+.Xr lsrc 1
+for more information.
 .It Fl v
 increase verbosity. This can be repeated for extra verbosity.
 .It Fl V