Prefer RCRC environment variable over ~/.rcrc

* Centralize configuration loading in rcm.sh(.in)
* Check for readability, not just existence

Add RCRC notes to all manpages. Putting the environment variables in a
table lines them up more neatly and definitively, across all output
formats, and also follows the examples used by e.g. BSD ls(1).

1 files changed, 6 insertions, 0 deletions

diff --git a/man/rcdn.1 b/man/rcdn.1
index d6737cf..43780ca 100644
--- a/man/rcdn.1
+++ b/man/rcdn.1
@@ -86,6 +86,12 @@ only remove the specified file(s)
 .Dl rcdn -t python
 .Dl rcdn -d ~/corporate-dotfiles
 .Dl rcdn -e '*:.zshrc'
+.Sh ENVIRONMENT
+.Bl -tag -width ".Ev RCRC"
+.It Ev RCRC
+User configuration file. Defaults to
+.Pa ~/.rcrc .
+.El
 .Sh FILES
 .Pa ~/.rcrc
 .Sh SEE ALSO