* Audio Feedback in Flymake: Easily Extending Flymake Itself
@ 2008-10-09 5:33 Veli-Pekka Tätilä
2008-10-09 21:14 ` Veli-Pekka Tätilä
0 siblings, 1 reply; 2+ messages in thread
From: Veli-Pekka Tätilä @ 2008-10-09 5:33 UTC (permalink / raw)
To: help-gnu-emacs
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Hi,
Simply put, can I tell Flymake to produce sound when a new error is
"created" or an existing one fixed? Visually, flymake uses a different
background color to indicate line statuses and posts the error and warnings
counts, I think, to the mode line. However, neither is particularly easy to
read out smartly with a Windows screen reader from Emacs, who just sees a
large "console", so I'd like to get audio feedback in stead. I'm using
flymake_lua from:
http://www.emacswiki.org/cgi-bin/wiki/FlymakeLua
Playing the sound as such
http://www.gnu.org/software/emacs/elisp/html_node/Sound-Output.html
or posting a message containing a bell to the message line monitored by the
screen reader
http://www.gnu.org/software/emacs/emacs-lisp-intro/html_node/message.html
seems easy enough.
I've taken a quick look at the list of functions in flymake but didn't find
hooks to add there. Nor did I find anything I could directly extend, in the
Lua specific bits. I'm rather new to Elisp but have read the gist of
Programming in Emacs Lisp.
On a side note, flymake is one of the many things that made me go wow when I
saw it in Emacs. Others, that I'm also using in Lua, include
outline-minor-mode matching functions, incremental regexp searches, the Lua
mode itself (due to the indents I do with C-i), not to mention dynamic
abbreviation bound to the tab key, for locals and function names. Great
features that go well together in coding.
Any help appreciated.
--
With kind regards Veli-Pekka Tätilä
Accessibility, Apps and Coding plus Synths and Music:
http://vtatila.kapsi.fi
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Audio Feedback in Flymake: Easily Extending Flymake Itself
2008-10-09 5:33 Audio Feedback in Flymake: Easily Extending Flymake Itself Veli-Pekka Tätilä
@ 2008-10-09 21:14 ` Veli-Pekka Tätilä
0 siblings, 0 replies; 2+ messages in thread
From: Veli-Pekka Tätilä @ 2008-10-09 21:14 UTC (permalink / raw)
To: help-gnu-emacs
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Hi list,
Once again, I did some basic learning on my own, and was able to come up
with a passable solution, TIMTOWTDI. Probably far from idiomatic, but it
gets the job done in my basic testing.
I looked at the flymake code, finding the flymake-report-status function
called with the error and warnings count string, formatted like "%d/%d".
Looking at the calls to that function, the only one having a non-empty error
string is the one that posts the updated error and warnings counts on the
mode line. In case of no errors or no warnings, it does not post 0/0.
Here's what I added in my .emacs file:
(defadvice
flymake-report-status
(before beep-on-flymake-failure (e-w &optional status) activate)
"Play not_ok.wav in ~/emacs if we have a non-empty error count string."
(if (and e-w (> (length e-w) 0 ) )
(play-sound-file "~/emacs/not_ok.wav")
) ; if
) ; advice
The ending comments make it easier to mentally track the parens, with a
screen reader.
I have also realized that playing another wav in the else case is a bad idea
as every succesful syntax check would beep reassuringly. That's far too
often to be gratifying, <smile>. Plus the sounds play synchronously, on
Win32 at least, ouch, so I'm keeping things brief. As in my OS sound scheme,
the error is a 40 ms quiet burst of pinkish noise.
On a side note, Is there an easy way to only get the syntax chekc after a
time out, on leaving the current line? OFten I leave the cursor on what I'm
editing and start thinking, yet my statement may well be in a syntactically
incorrect state at that point. I don't always hit C-j at the ends of lines,
either, if I'm editing an existing statement in stead.
Hope this helps somebody else some day, too.
--
With kind regards Veli-Pekka Tätilä
Accessibility, Apps and Coding plus Synths and Music:
http://vtatila.kapsi.fi
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