make tag helper

DEVGUIDE.md

@@ -92,15 +92,18 @@ and `make x_9020` runs "test_9020" in that tests.py.
 * `make insxlsx` 
 * `make unsxlsx`
 * `make coverage` 
-* update README.md with the result from coverage
+   * update README.md with the result from coverage
 * `git push` # if necessary
-* wait for github workflows to be okay
+   * wait for github workflows to be okay
 * prepare a tmp.changes.txt 
-* `git tag -F tmp.changes.txt v1.x` to the version in zziplib.spec
+* `make tag`
+   * `git tag -F tmp.changes.txt v1.x` to the version in zziplib.spec
 * `git push --tags`
 * update the short description on github
-* `make xlsx` and executed the shown `twine upload` to pypi.org
-* `make build` and executed the shown `twine upload` to pypi.org
+* `make xlsx` 
+  * execute shown `twine upload` to pypi.org
+* `make build`
+  * execute shown `twine upload` to pypi.org
 
 ## TODO
 

Makefile

@@ -137,6 +137,10 @@ version:
 	@ grep ^__version__ $(FILES) | grep -v .tests.py
 	@ ver=`cat $(MAIN_PROG) | sed -e '/__version__/!d' -e 's/.*= *"//' -e 's/".*//' -e q` \
 	; echo "# $(GIT) commit -m v$$ver"
+tag:
+	@ ver=`grep "version.*=" setup.cfg | sed -e "s/version *= */v/"` \
+	; rev=`git rev-parse --short HEAD` \
+	; echo ": ${GIT} tag $$ver $$rev"
 
 TESTSUITE = $(MAIN_PROG:.py=.tests.py)