problem with multiple devinput keys

[Yan S. <ya...@se...>]

I got a cheap USB IR remote that emulates a keyboard.  On some keys it 
sends out several characters.  The problem is that these are seen as 
multiple button pushes, even if I have flags = quit set...

Changing the order doesn't help.

I've isolated a test case:

lircrc:

# FA
    begin
        remote = hid_keyboard
        button = LeftControl
        button = LeftAlt
        button = A
        button = 1
        button = F1
        prog   = irexec
        config = echo FA
        repeat = 0
        flags  = quit
    end

# A
    begin
        remote = hid_keyboard
        button = A
        prog   = irexec
        config = echo A
        flags  = quit
    end

# 1
    begin
        remote = hid_keyboard
        button = 1
        prog   = irexec
        config = echo 1
        repeat = 0
        flags  = quit
    end

# NoClue
    begin
        remote = hid_keyboard
        button = LeftAlt
        button = Tab
        prog   = irexec
        config = echo NoClue
        flags  = quit
    end

# Tab
    begin
        remote = hid_keyboard
        button = Tab
        prog   = irexec
        config = echo Tab
        flags  = quit
    end

Output from irw:

selene:~# irw

Function Key A:

000000000001001d 00 LeftControl hid_keyboard
0000000000010038 00 LeftAlt hid_keyboard
000000000001001e 00 A hid_keyboard
0000000000010002 00 1 hid_keyboard
000000000001003b 00 F1 hid_keyboard

NoClue key:

0000000000010038 00 LeftAlt hid_keyboard
000000000001000f 00 Tab hid_keyboard
^C

output from irexec - for some reason, the A and 1 keys are seen as 
separate key strokes AND the whole FA pattern is also seen - in spite of 
using the quit flag....  But this doesn't happen with the NoClue key.  
(It's got a picture I can't figure out, thus the name....)

yan@selene:~$ irexec ~/.lircrc
A
1
FA
NoClue

Output from evtest (google for evtest.c - a simple utility that dumps 
scan codes)

Testing ... (interrupt to exit)
Function A:

Event: time 1232812446.747180, type 4 (Misc), code 4 (ScanCode), value 700e0
Event: time 1232812446.747199, type 1 (Key), code 29 (LeftControl), value 1
Event: time 1232812446.747203, type 4 (Misc), code 4 (ScanCode), value 700e2
Event: time 1232812446.747206, type 1 (Key), code 56 (LeftAlt), value 1
Event: time 1232812446.747212, type 4 (Misc), code 4 (ScanCode), value 70004
Event: time 1232812446.747217, type 1 (Key), code 30 (A), value 1
Event: time 1232812446.747221, -------------- Report Sync ------------
Event: time 1232812446.763176, type 4 (Misc), code 4 (ScanCode), value 7001e
Event: time 1232812446.763194, type 1 (Key), code 2 (1), value 1
Event: time 1232812446.763197, -------------- Report Sync ------------
Event: time 1232812446.779178, type 4 (Misc), code 4 (ScanCode), value 7003a
Event: time 1232812446.779192, type 1 (Key), code 59 (F1), value 1
Event: time 1232812446.779196, -------------- Report Sync ------------
Event: time 1232812446.803190, type 4 (Misc), code 4 (ScanCode), value 700e0
Event: time 1232812446.803207, type 1 (Key), code 29 (LeftControl), value 0
Event: time 1232812446.803211, type 4 (Misc), code 4 (ScanCode), value 700e2
Event: time 1232812446.803214, type 1 (Key), code 56 (LeftAlt), value 0
Event: time 1232812446.803222, type 4 (Misc), code 4 (ScanCode), value 70004
Event: time 1232812446.803226, type 1 (Key), code 30 (A), value 0
Event: time 1232812446.803230, -------------- Report Sync ------------
Event: time 1232812446.811178, type 4 (Misc), code 4 (ScanCode), value 7001e
Event: time 1232812446.811191, type 1 (Key), code 2 (1), value 0
Event: time 1232812446.811194, -------------- Report Sync ------------
Event: time 1232812446.827174, type 4 (Misc), code 4 (ScanCode), value 7003a
Event: time 1232812446.827185, type 1 (Key), code 59 (F1), value 0
Event: time 1232812446.827188, -------------- Report Sync ------------

NoClue:
Event: time 1232812451.323180, type 4 (Misc), code 4 (ScanCode), value 700e2
Event: time 1232812451.323193, type 1 (Key), code 56 (LeftAlt), value 1
Event: time 1232812451.323199, type 4 (Misc), code 4 (ScanCode), value 7002b
Event: time 1232812451.323203, type 1 (Key), code 15 (Tab), value 1
Event: time 1232812451.323207, -------------- Report Sync ------------
Event: time 1232812451.347184, type 4 (Misc), code 4 (ScanCode), value 700e2
Event: time 1232812451.347198, type 1 (Key), code 56 (LeftAlt), value 0
Event: time 1232812451.347204, type 4 (Misc), code 4 (ScanCode), value 7002b
Event: time 1232812451.347208, type 1 (Key), code 15 (Tab), value 0
Event: time 1232812451.347212, -------------- Report Sync ------------