Add the COPY_ALWAYS option

The suite now honors the `COPY_ALWAYS` option in rcrc(5). This can be
set to a space-separated list of file globs. Any file matching a glob is
copied instead of symlinked. This is handy both for secure programs
(`netrc`, `ssh/id_*`) and for programs that oddly re-write files
(`weechat/*`).

To always copy everything, use the `*` glob.

This is reflected throughout the suite as follows:

* lsrc now has a `-F` option which shows a symbol to indicate whether it
  is a symlink (`@`) or a copy (`X`).
* rcdn only removes symlinks unless the file under question matches a
  `COPY_ALWAYS` glob, in which case it is removed regardless of whether
  it is a symlink.
* rcup will copy instead of symlinking any file that matches any
  `COPY_ALWAYS` glob.

4 files changed, 43 insertions, 6 deletions

diff --git a/man/lsrc.1 b/man/lsrc.1
index f8e675c..b733873 100644
--- a/man/lsrc.1
+++ b/man/lsrc.1
@@ -6,7 +6,7 @@
 .Nd show configuration files
 .Sh SYNOPSIS
 .Nm lsrc
-.Op Fl vq
+.Op Fl Fvq
 .Op Fl d Ar dir
 .Op Fl I Ar excl_pat
 .Op Fl t Ar tag
@@ -25,12 +25,21 @@ section, for details on the directory layout.
 It supports these options:
 .
 .Bl -tag
-.It Fl t Ar TAG
-list dotfiles according to TAG
-.
 .It Fl d Ar DIR
 list dotfiles from the DIR. This can be specified multiple times.
 .
+.It Fl F
+show symbols next to each file indicating status information. Supported
+symbols are
+.Li @
+which indicates that the file is a symlink, and
+.Li X
+to indicate that the file is a copy. More details on copied files can be
+found in
+.Xr rcrc 5 ,
+under the documentation about
+.Va COPY_ALWAYS .
+.
 .It Fl I Ar excl_pat
 include the files that match the given pattern. This is applied after
 any
@@ -40,6 +49,10 @@ options. It uses the same pattern language as
 more details are in the
 .Sx EXCLUDE PATTERN
 section.
+.
+.It Fl t Ar TAG
+list dotfiles according to TAG
+.
 .It Fl v
 increase verbosity. This can be repeated for extra verbosity.
 .
diff --git a/man/rcdn.1 b/man/rcdn.1
index 2981bbc..6c641c9 100644
--- a/man/rcdn.1
+++ b/man/rcdn.1
@@ -13,13 +13,24 @@
 .Op Fl x Ar excl_pat
 .Op Ar files ...
 .Sh DESCRIPTION
-This program will remove all the rc file symlinks that the
+This program will remove all the rc files that the
 .Xr rcm 7
 suite knows about. This can be further controlled with the
 .Fl t
 and
 .Fl d
 flags.
+.Pp
+The files that are removed are symlinks. However, the
+.Va COPY_ALWAYS
+setting in
+.Xr rcrc 5
+modifies this. If a rc file is not a symlink but an ancestor directory
+is, that directory is removed. If a rc file is not a symlink but is
+listed in
+.Va COPY_ALWAYS
+the file is removed.
+.
 .Bl -tag
 .It Fl d Ar DIR
 remove rc files from the
diff --git a/man/rcrc.5 b/man/rcrc.5
index f14eecf..c7f300a 100644
--- a/man/rcrc.5
+++ b/man/rcrc.5
@@ -28,22 +28,29 @@ programs.
 .Pp
 It supports these variables:
 .Bl -tag
+.It Va COPY_ALWAYS
+always copy files that match the listed globs, never symlink them.
+.
 .It Va DOTFILES_DIRS
 the source directories for dotfiles. The first in the list is the
 canonical source. The default value is
 .Li ~/.dotfiles
+.
 .It Va EXCLUDES
 a space-separated list of exclude patterns. Exclude patterns are
 explained in detail in
 .Xr lsrc 1
 under the section
 .Sx EXCLUDE PATTERN .
+.
 .It Va TAGS
 the default tags.
 .El
 .Sh FILES
 .Pa ~/.rcrc
 .Sh EXAMPLES
+.Dl COPY_ALWAYS="ssh/id_* weechat/* netrc"
+.Dl COPY_ALWAYS="*"
 .Dl DOTFILES_DIRS="/home/mike/.dotfiles /usr/share/dotfiles"
 .Dl EXCLUDES="irbrc *:*emacs* dotfiles:python*"
 .Dl TAGS="freebsd development email git laptop gmail notmuch"
diff --git a/man/rcup.1 b/man/rcup.1
index 0b265ab..99fa364 100644
--- a/man/rcup.1
+++ b/man/rcup.1
@@ -76,7 +76,13 @@ will be installed into
 \&.
 .Pp
 Files are installed as symlinks. Directories are installed by making
-directories.
+directories. The
+.Fl C
+flag causes files to be installed as copies instead of symlinks. The
+.Va COPY_ALWAYS
+option in
+.Xr rcrc 5
+can be used to list files that must only be copied.
 .Pp
 Two meta files are supported: host-specific files and tagged files.
 .Pp