When generating the list of test files, ignore any whose names begin
with a dot. If nothing else, this avoids crashing on the symlinks that
Emacs creates for files with pending changes. In that case it creates a
symlink to nowhere until the content is saved or reverted, and those
symlinks produce test failures like this:
Backtrace:
3 (primitive-load "/home/rlb/src/guile/utf8-debug/test-su?")
In ice-9/eval.scm:
619:8 2 (_ #(#(#(#<directory (guile-user) 7f0239b32c80> #) #) #))
In ice-9/ports.scm:
450:11 1 (call-with-input-file "../../libguile/.#strings.c" #<p?> ?)
In unknown file:
0 (open-file "../../libguile/.#strings.c" "r" #:encoding # ?)
ERROR: In procedure open-file:
In procedure open-file: No such file or directory: "../../libguile/.#strings.c"
FAIL: test-bad-identifiers
* test-suite/standalone/test-bad-identifiers: ignore files with names
beginning with a dot.
