hg checkfiles [options]
checks changed files in the working directory for tabs or trailing whitespace
--verbose shows the location of offending characters in each line
--quiet hides filenames and only reports summary information
--debug shows settings and details about each file considered for checking
If problems are found, the command returns 1, otherwise 0.
options:
-f --fixup fix files by replacing tabs and removing trailing whitespace
-t --tabsize set the tab length (default: 8 or checkfiles.tab_size)
use "hg -v help checkfiles" to show global options