Update printable man page generation. (#197)

* Update printable.man target.
* Update ubuntu runner version.

Author: tjko

.github/workflows/compile.yml

@@ -14,11 +14,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-22.04, ubuntu-latest, macos-latest, windows-latest]
         include:
           - os: windows-latest
             triplet: x64-windows
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             triplet: x64-linux
           - os: macos-latest
             triplet: x64-osx

Makefile.in

@@ -49,6 +49,8 @@ INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 
+GROFF_FLAGS = -t -e -mandoc
+
 @SET_MAKE@
 
 # should be no reason to modify lines below this
@@ -93,8 +95,10 @@ install: all install.dirs install.man
 	$(INSTALL) -m 755 $(PKGNAME) $(DESTDIR)$(bindir)/$(PKGNAME)
 
 printable.man:
-	groff -Tps -mandoc ./$(PKGNAME).1 >$(PKGNAME).ps
-	groff -Tascii -mandoc ./$(PKGNAME).1 | tee $(PKGNAME).prn | sed 's/.//g' >$(PKGNAME).txt
+	groff $(GROFF_FLAGS) -Tps ./$(PKGNAME).1 > $(PKGNAME).ps
+	groff $(GROFF_FLAGS) -Tpdf ./$(PKGNAME).1 > $(PKGNAME).pdf
+	groff $(GROFF_FLAGS) -Tascii ./$(PKGNAME).1 | col -bx > $(PKGNAME).txt
+	groff $(GROFF_FLAGS) -Thtml ./$(PKGNAME).1 > $(PKGNAME).html
 
 install.man: install.dirs
 	$(INSTALL) -m 644 $(PKGNAME).1 $(DESTDIR)$(mandir)/man1/$(PKGNAME).1