update-manpages: explicitly strip color codes

On some systems, help2man produces color codes in the output.  Remove
them to avoid manpage churn.

Also begin adding unit tests.

Change-Id: I3f0204b19d9cae524d3cb5fcfb61ee309b0931fc
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/349655
Tested-by: LaMont Jones <lamontjones@google.com>
Reviewed-by: Xin Li <delphij@google.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/update_manpages.py b/tests/update_manpages.py
new file mode 120000
index 00000000..40bbdea7
--- /dev/null
+++ b/tests/update_manpages.py
@@ -0,0 +1 @@
+update-manpages
\ No newline at end of file