+1, structural regular expressions are a joy to use. https://doc.cat-v.org/bell_labs/sam_lang_tutorial/sam_tut.pdf https://doc.cat-v.org/bell_labs/sam_lang_tut

+1, structural regular expressions are a joy to use. https://doc.cat-v.org/bell_labs/sam_lang_tutorial/sam_tut.pdf https://doc.cat-v.org/bell_labs/sam_lang_tutorial/sam_tut.pd... Also interesting, with other derivates of ed -- LineEditorFamily in the TextEditors Wiki: https://texteditors.org/cgi-bin/wiki.pl?LineEditorFamily https://texteditors.org/cgi-bin/wiki.pl?LineEditorFamily