strlen(p) may be arbitrarily long, that would underflow the word, for
instance:

testing fr Latn
=================================================================
==3741805==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffd733c1329 at pc 0x7ff5ffbad2de bp 0x7ffd733bf310 sp 0x7ffd733bf308
READ of size 1 at 0x7ffd733c1329 thread T0
    #0 0x7ff5ffbad2dd in IsLetterGroup src/libespeak-ng/dictionary.c:714
    #1 0x7ff5ffbbe425 in MatchRule src/libespeak-ng/dictionary.c:1979
    #2 0x7ff5ffbc09e9 in TranslateRules src/libespeak-ng/dictionary.c:2301
    #3 0x7ff5ffc26656 in TranslateWord3 src/libespeak-ng/translate.c:733
    #4 0x7ff5ffc2a10b in TranslateWord src/libespeak-ng/translate.c:1100
    #5 0x7ff5ffc2bef2 in TranslateWord2 src/libespeak-ng/translate.c:1361
    #6 0x7ff5ffc374e2 in TranslateClause src/libespeak-ng/translate.c:2623
    #7 0x7ff5ffc1d010 in SpeakNextClause src/libespeak-ng/synthesize.c:1569
    #8 0x7ff5ffbfbd46 in Synthesize src/libespeak-ng/speech.c:492
    #9 0x7ff5ffbfd52a in sync_espeak_Synth src/libespeak-ng/speech.c:570
    #10 0x7ff5ffbfdd1f in espeak_ng_Synthesize src/libespeak-ng/speech.c:678
    #11 0x7ff5ffbc72fd in espeak_Synth src/libespeak-ng/espeak_api.c:90
    #12 0x5627511a3137 in main src/espeak-ng.c:691
    #13 0x7ff5fee557fc in __libc_start_main ../csu/libc-start.c:332
    #14 0x5627511a0569 in _start (/home/samy/ens/projet/1/speech/espeak-ng-git/src/.libs/espeak-ng+0x6569)

Address 0x7ffd733c1329 is located in stack of thread T0 at offset 1177 in frame
    #0 0x7ff5ffc2f760 in TranslateClause src/libespeak-ng/translate.c:1941

  This frame has 16 object(s):
    [48, 52) 'cc' (line 1944)
    [64, 68) 'source_index' (line 1945)
    [80, 84) 'prev_in' (line 1948)
    [96, 100) 'prev_out' (line 1949)
    [112, 116) 'next_in' (line 1952)
    [128, 132) 'char_inserted' (line 1954)
    [144, 148) 'word_flags' (line 1963)
    [160, 164) 'charix_top' (line 1975)
    [176, 180) 'tone' (line 1985)
    [192, 196) 'next2_in' (line 2294)
    [208, 212) 'c_temp' (line 2518)
    [224, 374) 'number_buf' (line 2522)
    [448, 1048) 'num_wtab' (line 2523)
    [1184, 1984) 'sbuf' (line 1982) <== Memory access at offset 1177 underflows this variable
    [2112, 3720) 'charix' (line 1977)
    [3856, 7456) 'words' (line 1978)

sbuf is however properly '\0'-header, so we can make IsLetterGroup
carefully walk back in the word and issue a mismatch if it walks back
too much.

Fixes #1108

this is the maximum espeak-ng's speech rate without using libsonic

event_notify currently introduces an arbitrary 50ms delay between speech
requests. This is usually unnoticed since it's small. But when
cancelling a long series of events, they add up to potentially seconds
of delays, while the user was precisely requesting to just cancel
everything as fast as possible.

This 50ms delay was probably meant to work around some issues elsewhere.
If they are still there, they should be fixed, not worked around.

Signed-off-by: Ulrich Müller <[email protected]>

https://github.com/espeak-ng/espeak-ng/issues/1072

Signed-off-by: Ulrich Müller <[email protected]>

The links persisted when ./configure run with extended dictionaries
disabled.

This reverts commit 433d219eca.

envelope_dat.

envelope_dat and envelope_paths were only set but never used.
LoadEnvelope() and LoadEnvelope2() no longer need fname as an argument.

it: Updates italian source dictionaries

docs: Fixed the footnote for Japanese

Should be input in hiragana and katakana, not Arabic alphabet.

They are making the files non-ascii for no useful reason

Fixed the unnecessary errors in the arlistx file

first step twards fixing the arabic pronunciation

569e1e9a6a

Words containing "uia":
Algonquian
alleluia
colloquia
colloquial
colloquialism
equiangular
Guiana
reliquiae

Words containing "guid":
guidable
guidance
guide
guidebook
guided
guideline
guidepost
guider
guiders
honeyguide
languid
languidness
misguide
misguided
preguide
waveguide

This way we can compile multiple dictionaries at a time without
stepping on 'temp' file from different compilation steps:

    $ make -j8 -B
    ...
    make[1]: *** [Makefile:3082: espeak-ng-data/an_dict] Segmentation fault (core dumped)
    make[1]: *** Deleting file 'espeak-ng-data/an_dict'
    make[1]: *** [Makefile:3082: espeak-ng-data/az_dict] Segmentation fault (core dumped)
    make[1]: *** Deleting file 'espeak-ng-data/az_dict'

en: Fix several Microsoft-specific terms