master
Remove whitespace at the beginning of the files
rename each_match.c to callback_each_match.c
remove look-behind from sample pattern
remove unused variables
use onig_get_callout_data_by_tag_dont_clear_old() instead of onig_get_callout_data_by_tag()
add calling of some free functions in case of error
remove tab
add a test sample into encode.c
docs: fix simple typo, hostory -> history
change initialization of use_encs[] for VisualStudio C compiler
add test cases into sample/scan.c