percentage calculations excluding sum row

[bhogan-mitre]

I found this package to be very helpful for a quick look at code complexity. Thank you!

One thing that struck me as counter-intuitive, however, is that the sum row is always listed as 50% in the percentage columns. This makes it hard to interpret the actual percentages. For example the blank lines from C++ files should be 63% here instead of 31.5%.

> cloc(system.file("extdata", package="cloc"))
# A tibble: 3 × 10
  source  language file_count file_count_pct   loc loc_pct blank_lines blank_line_pct comment_lines comment_line_pct
  <chr>   <chr>         <int>          <dbl> <int>   <dbl>       <int>          <dbl>         <int>            <dbl>
1 extdata C++               1           0.25   142   0.254          41          0.315            63            0.235
2 extdata R                 1           0.25   138   0.246          24          0.185            71            0.265
3 extdata SUM               2           0.5    280   0.5            65          0.5             134            0.5  

What do you think about excluding the sum row from the denominator of these calculations? https://github.com/hrbrmstr/cloc/blob/master/R/cloc.R#L102-L105

The sum row of percentage columns could then be corrected to 100% after, or set as NA.