It's not uncommon to have a line with a single form feed in it, e.g. the default GPL COPYING and also in .c files and others. Attached patch allows this in the pre-commit hook.
-Hannes
Show changes to templates/hooks--pre-commit +1 −1
diff --git a/templates/hooks--pre-commit b/templates/hooks--pre-commit index 7092bae..a759f92 100644 --- a/templates/hooks--pre-commit +++ b/templates/hooks--pre-commit @@ -55,7 +55,7 @@ perl -e ' if (s/^\+//) { $lineno++; chomp; - if (/\s$/) { + if (!/^\f$/ && /\s$/) { bad_line("trailing whitespace", $_); } if (/^\s* \t/) {