Re: A suggestion to add to gnu ed: command line option to start on line foo or bar.

[John Cowan]

Great, thanks!  These are in no particular order:

-R, --readonly: Inhibits the w, wq, and W commands.

-P, --prompt: Executes P command.

(.,.) arguments to ! command: Process specified lines through the shell
command.

multiple files on the command line, N and R commands: You can specify as
many files as you like, but normally only the first file is used.  The N
and R commands cause the next (or first) file in the list to be loaded as
if by the e command; the newly loaded file name is printed. ("R" is for
"rewind".)

T <tag> command, -T/--tag option: Jump to a tag in the `tags` file in the
current directory.  Lines in a tag file look like
"tagname<TAB>file<TAB>+-option".  If "file" is not the same as the current
file, it is loaded as if by "e".  The + character is not included in the
third field, so it is a line number or a search pattern beginning with / or
?.  A semicolon and everything following it is ignored.

U and R commands: U is multi-level undo, R is redo.

J command: Same as j, but adds a space between original lines.

F command: Enhanced version of f command.  Displays values of . and $, and
indicates if the current file is modified and/or readonly.

x command: Equivalent to wq command.

< command: Remove up to 8 spaces from beginning of line.

> command: Insert up to 8 spaces at the beginning of line.

(EOF) command: Same as z, but outputs half as many lines.