CI: check for common mispellings

Author: mr-c

Makefile

@@ -107,6 +107,10 @@ pydocstyle_report.txt: $(PYSOURCES)
 diff_pydocstyle_report: pydocstyle_report.txt
 	diff-quality --compare-branch=main --violations=pydocstyle --fail-under=100 $^
 
+## codespell   : check for common mispellings
+codespell:
+	codespell -w $(shell git ls-files | grep -v cwltool/schemas | grep -v cwltool/jshint/ | grep -v typeshed)
+
 ## format      : check/fix all code indentation and formatting (runs black)
 format:
 	black --exclude cwltool/schemas setup.py cwltool.py cwltool tests

lint-requirements.txt

@@ -1,2 +1,3 @@
 flake8-bugbear
 black ~= 22.0
+codespell

tox.ini

@@ -67,7 +67,7 @@ commands_pre =
 commands =
   py3{6,7,8,9,10}-unit: make coverage-report coverage.xml PYTEST_EXTRA={posargs}
   py3{6,7,8,9,10}-bandit: bandit -r cwltool
-  py3{6,7,8,9,10}-lint: make flake8 format-check
+  py3{6,7,8,9,10}-lint: make flake8 format-check codespell
   py3{6,7,8,9,10}-mypy: make mypy mypyc PYTEST_EXTRA={posargs}
   py39-shellcheck: make shellcheck
   py39-pydocstyle: make diff_pydocstyle_report