Support regexp for --source option

[k1LoW]

No description provided.

[github-actions]

Code Metrics Report

	main (e953633)	#23 (8019b5f)	+/-
Coverage	7.6%	7.2%	-0.3%
Code to Test Ratio	1:0.1	1:0.1	-0.0
Test Execution Time	4m24s	4m6s	-18s

Details

  |                     | main (e953633) | #23 (8019b5f) |  +/-  |
  |---------------------|----------------|---------------|-------|
- | Coverage            |           7.6% |          7.2% | -0.3% |
  |   Files             |              1 |             1 |     0 |
  |   Lines             |            132 |           138 |    +6 |
  |   Covered           |             10 |            10 |     0 |
- | Code to Test Ratio  |          1:0.1 |         1:0.1 |  -0.0 |
  |   Code              |            586 |           594 |    +8 |
  |   Test              |             58 |            58 |     0 |
+ | Test Execution Time |          4m24s |          4m6s |  -18s |

Code coverage of files in pull request scope (7.6% → 7.2%)

Files	Coverage	+/-
internal/internal.go	7.2%	-0.3%

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Reported by octocov