How to hg ignore filename with no extension?

Question

Mercurial can be configured to ignore files whose filename have a certain extension. For example, *.txt files can be ignored by adding this to ~/.hgignore:

syntax: glob
*.txt

How can I setup my .hgignore file to ignore files whose filenames have no extensions? For example, files named foobar and abracadabra should be ignored, but foobar.cpp and abracadabra.c should be tracked.

Answer 1

Use regexp syntax instead since it's not possible with glob:

syntax: regexp
^[^.]+$

PS: you can add it right after your syntax: glob section