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small improvement of autoedit.asciidoc

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Maxime Coste 2015-02-03 13:56:55 +00:00
parent 2a28260f87
commit a68ce2bf51
1 changed files with 13 additions and 9 deletions
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doc/autoedit.asciidoc
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@ -32,17 +32,21 @@ note that if nothing gets selected on phase *2.*, an error will be raised.
We want to do that each time the user jumps a line, just after the new line We want to do that each time the user jumps a line, just after the new line
is inserted. So the hook would be: is inserted. So the hook would be:
------------------------------------------------------ --------------------------------------------------------
:hook InsertChar \n %{ exec k<a-x>s^\h+<ret>yj<a-h>P } :hook InsertChar \n %{ exec k<a-x> s^\h+<ret>y j<a-h>P }
------------------------------------------------------ --------------------------------------------------------
(exec concatenates the keys for all argument, so the spaces will be ignored,
allowing for clearer separation. either use <space> or quote the argument to
use a space key)
That works, however if the phase *2.* raises an error, the +:exec+ will stop That works, however if the phase *2.* raises an error, the +:exec+ will stop
and the user will get it's selections on the previous line. the solution and the user will get it's selections on the previous line. the solution
is to use a *draft* context, instead of the one the user is interacting with. is to use a *draft* context, instead of the one the user is interacting with.
------------------------------------------------------------- ---------------------------------------------------------------
:hook InsertChar \n %{ exec -draft k<a-x>s^\h+<ret>yj<a-h>P } :hook InsertChar \n %{ exec -draft k<a-x> s^\h+<ret>y j<a-h>P }
------------------------------------------------------------- ---------------------------------------------------------------
That way, exec is executed in a *copy* of the user's context, which means it That way, exec is executed in a *copy* of the user's context, which means it
manipulates a *copy* of the user's selections. manipulates a *copy* of the user's selections.
@ -77,7 +81,7 @@ it will write informations about it in the debug buffer, which we do not want,
as this is actually expected. In order to prevent that, the exec should be as this is actually expected. In order to prevent that, the exec should be
wrapped in a try command. So we would have: wrapped in a try command. So we would have:
----------------------------------------------------------------------------- -------------------------------------------------------------------------------
:hook InsertChar \n %[ try %[ exec -draft k<a-x><a-k>[{(]\h*$<ret>j<a-gt> ] ] :hook InsertChar \n %[ try %[ exec -draft k<a-x> <a-k>[{(]\h*$<ret> j<a-gt> ] ]
----------------------------------------------------------------------------- -------------------------------------------------------------------------------