To add to Ian's reference. "Ed Mastery" is the only book I know specific to ed(1).
Mo On Thu, 4 Jul 2019, 6:54 pm ropers <rop...@gmail.com wrote: > Do I understand correctly that this is in reference to these parts of man > 1 ed: > > > /re/ > > The next line containing the regular expression re. The search wraps > to the beginning of the buffer and continues down to the current line, if > necessary. “//” repeats the last search. > > > ?re? > > The previous line containing the regular expression re. The search > wraps to the end of the buffer and continues up to the current line, if > necessary. “??” repeats the last search. > > and: > > > (1,$)g/re/command-list > > Applies command-list to each of the addressed lines matching a > regular expression re. The current address is set to the line currently > matched before command-list is executed. At the end of the g command, the > current address is set to the last line affected by command-list. If no > lines were matched, the current line number remains unchanged. > > > > Each command in command-list must be on a separate line, and every > line except for the last must be terminated by a backslash (‘\’). Any > commands are allowed, except for g, G, v, and V. A newline alone in > command-list is equivalent to a p command. > > > If yes, then the corresponding parts of ed.1 are: > > .It / Ns Ar re Ns / > The next line containing the regular expression > .Ar re . > The search wraps to the beginning of the buffer and continues down to the > current line, if necessary. > .Qq // > repeats the last search. > .It Pf ? Ar re ? > The previous line containing the regular expression > .Ar re . > The search wraps to the end of the buffer and continues up to the > current line, if necessary. > .Qq ?? > repeats the last search. > > and: > > .It Xo > .Pf (1,$) Ic g No / > .Ar re No / Ar command-list > .Xc > .Sm on > Applies > .Ar command-list > to each of the addressed lines matching a regular expression > .Ar re . > The current address is set to the line currently matched before > command-list is executed. > At the end of the > .Ic g > command, the current address is set to the last line affected by > command-list. > If no lines were matched, > the current line number remains unchanged. > .Pp > Each command in > .Ar command-list > must be on a separate line, > and every line except for the last must be terminated by a backslash > .Pq Sq \e . > Any commands are allowed, except for > .Ic g , > .Ic G , > .Ic v , > and > .Ic V . > A newline alone in command-list is equivalent to a > .Ic p > command. > .Sm off > > I'm not actually sure how to rewrite that. Would this call for > separate /re, ?re and (1,$)g/re entries, or would it suffice to say > that the second question mark or slash can be omitted if immediately > followed by a newline? > > Does anyone else have any ideas? > > NB: In case people haven't seen it, here's an excellent ed(1) > tutorial: https://sanctum.geek.nz/arabesque/actually-using-ed/ > I just thought I'd mention that. > > Ian > > On 03/07/2019, mazoc...@disroot.org <mazoc...@disroot.org> wrote: > > Hi! > > > > I am not good at explaining something shortly and clearly to fit into > > proper documentation, so I'll just describe my experience here. > > > > Terminating regular expressions with / or ? is necessary only if they > > are followed by commands, otherwise the following are legal in both > > OpenBSD ed, Plan 9 ed and GNU ed: > > /something > > / > > ? > > g/ing > > > > I hope I made life of many ed users easier :) > > > > > >
