Answer to
:ab
Overload Exercise
In every case, the other meaning would prevail over the
:ab
meaning. Reason: all the other
metacharacters and metastrings take effect as soon as the last
character of the string is typed in. But an abbreviation doesn't
take effect until you type the next following character in,
proving that your string was a word by itself. So the other
metavalue will always be triggered first.
Answer to Multi-Line Problem
There are various uses for making some source-file commands
unexecutable from screen mode. Here are two examples.
- You have a source file that makes complex changes in a
certain area of your file, then prints the modified lines so you
can look over the changes. But when you are in screen mode, the
changes are displayed anyway, so the line-mode
print
command only duplicates the
display -- but it does require you to hit the return key and wait
for a screen repaint before you can continue screen editing.
Putting the command to print on a second line makes sure printing
will only happen when you need it.
- Your source file automates a lot of detail when you are doing
a routine cleanup of an imported file while in line mode. But
when the file is too messed up for a blind cleanup from line
mode, and you must work from screen mode, a few of the commands
in your source file are likely to do more
harm than good. When
those few commands are on a second line in the file, they only
run when you are doing routine work from line mode.
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