Re: ACS/UTF-8 Line Drawing Question

[Marc Smith]

On Fri, Nov 18, 2016 at 9:03 PM, Thomas Dickey <address@hidden> wrote:
> On Thu, Nov 17, 2016 at 10:01:51AM -0500, Marc Smith wrote:
>> Hi,
>>
>> I'm following up on this to see if you had any additional advice --
>> I'd really like to make PuTTY work out-of-the-box. Currently, users of
>> my software must change the remote character set to "Latin-1, West
>> Europe" when using PuTTY in order for the line drawing characters to
>> display properly. No other terminal emulators that I've come across
>> have this issue.
>>
>> My TUI application is using the CDK library. Does
>> "NCURSES_NO_UTF8_ACS=1" not affect this? I believe CDK uses everything
>> via ncurses, but maybe something related to the line drawing is
>> implemented differently? I'm out of ideas, so any help would be
>> greatly appreciated.
>
> three points come to mind (though I seem to recall pointing out another...):
>
> a) CDK would have to be linked with ncursesw (if not, you would get ASCII
>    +'s and -'s for lines)

CDK is in-fact linked again ncursesw, and actually, on this system,
there is only ncursesw. I am getting x's for the vertical lines, and
q's for the horizontal lines.


> b) NCURSES_NO_UTF8_ACS should work - but setting it in PuTTY's environment
>    variables dialog doesn't help much if the server disallows that variable.

I'm setting NCURSES_NO_UTF8_ACS before the TUI binary is executed. I
seem to recall even verifying the value is set with getenv() at one
point.


> c) Someone might still be running RHEL5 (which used a version of ncurses
>    before the variable was added).

This system is using ncurses 5.9.


--Marc

>>
>> Thanks for your time.
>>
>>
>> --Marc
>>
>> On Tue, Jun 28, 2016 at 10:03 AM, Marc Smith <address@hidden> wrote:
>> > Thanks; I tried setting the terminal string to "putty" in PuTTY when
>> > connecting, and I still get the letters instead of ACS line
>> > characters. I checked 'infocmp' when using this:
>> >
>> > --snip--
>> > address@hidden ~]# infocmp
>> > #       Reconstructed via infocmp from file: /usr/share/terminfo/p/putty
>> > putty|PuTTY terminal emulator,
>> >         am, bce, bw, ccc, hs, mir, msgr, xenl, xon,
>> >         colors#8, it#8, ncv#22, pairs#64,
>> >         acsc=``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
>> >         bel=^G, blink=\E[5m, bold=\E[1m, cbt=\E[Z, civis=\E[?25l,
>> >         clear=\E[H\E[J, cnorm=\E[?25h, cr=^M,
>> >         csr=\E[%i%p1%d;%p2%dr, cub=\E[%p1%dD, cub1=^H,
>> >         cud=\E[%p1%dB, cud1=\ED, cuf=\E[%p1%dC, cuf1=\E[C,
>> >         cup=\E[%i%p1%d;%p2%dH, cuu=\E[%p1%dA, cuu1=\EM,
>> >         dch=\E[%p1%dP, dch1=\E[P,
>> >         
>> > address@hidden@address@hidden@address@hidden@address@hidden@%e%p1%c%;,
>> >         dl=\E[%p1%dM, dl1=\E[M, dsl=\E]0;\007, ech=\E[%p1%dX,
>> >         ed=\E[J, el=\E[K, el1=\E[1K, enacs=\E(B\E)0,
>> >         flash=\E[?5h\E[?5l, fsl=^G, home=\E[H, hpa=\E[%i%p1%dG,
>> >         ht=^I, hts=\EH, il=\E[%p1%dL, il1=\E[L, ind=^J,
>> >         indn=\E[%p1%dS,
>> >         
>> > initc=\E]P%p1%x%p2%{255}%*%{1000}%/%02x%p3%{255}%*%{1000}%/%02x%p4%{255}%*%{1000}%/%02x,
>> >         is2=\E7\E[r\E[m\E[?7h\E[?1;4;6l\E[4l\E8\E>\E]R,
>> >         kb2=\E[G, kbs=\177, kcan=^C, kcbt=\E[Z, kcub1=\E[D,
>> >         kcud1=\E[B, kcuf1=\E[C, kcuu1=\E[A, kdch1=\E[3~,
>> >         kend=\E[4~, kf1=\E[11~, kf10=\E[21~, kf11=\E[23~,
>> >         kf12=\E[24~, kf13=\E[25~, kf14=\E[26~, kf15=\E[28~,
>> >         kf16=\E[29~, kf17=\E[31~, kf18=\E[32~, kf19=\E[33~,
>> >         kf2=\E[12~, kf20=\E[34~, kf3=\E[13~, kf4=\E[14~,
>> >         kf5=\E[15~, kf6=\E[17~, kf7=\E[18~, kf8=\E[19~, kf9=\E[20~,
>> >         khome=\E[1~, kich1=\E[2~, kmous=\E[M, knp=\E[6~, kpp=\E[5~,
>> >         kspd=^Z, nel=^M^J, oc=\E]R, op=\E[39;49m, rc=\E8, rev=\E[7m,
>> >         ri=\EM, rin=\E[%p1%dT, rmacs=^O, rmam=\E[?7l,
>> >         rmcup=\E[2J\E[?47l, rmir=\E[4l, rmpch=\E[10m,
>> >         rmso=\E[27m, rmul=\E[24m,
>> >         rs2=\E<\E["p\E[50;6"p\Ec\E[?3l\E]R\E[?1000l,
>> >         s0ds=\E[10m, s1ds=\E[11m, s2ds=\E[12m, sc=\E7,
>> >         setab=\E[4%p1%dm, setaf=\E[3%p1%dm,
>> >         
>> > sgr=\E[0%?%p1%p6%|%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;m%?%p9%t\016%e\017%;,
>> >         sgr0=\E[m\017, smacs=^N, smam=\E[?7h, smcup=\E[?47h,
>> >         smir=\E[4h, smpch=\E[11m, smso=\E[7m, smul=\E[4m,
>> >         tbc=\E[3g, tsl=\E]0;, u6=\E[%i%d;%dR, u7=\E[6n, u8=\E[?6c,
>> >         u9=\E[c, vpa=\E[%i%p1%dd,
>> > --snip--
>> >
>> > So it appears the entry for "putty" is in my terminal database.
>> >
>> > I'm not sure if NCURSES_NO_UTF8_ACS=1 is required when using "putty"
>> > for TERM -- I tried it both ways (set / not set) and still get letters
>> > instead of lines. In that Stack Overflow article, the user resolved
>> > their problem by using tmux or screen, but I'd prefer to not do that.
>> >
>> > Any other ideas? I appreciate your time.
>> >
>> >
>> > --Marc
>> >
>> > On Wed, Jun 22, 2016 at 7:40 PM, Thomas Dickey <address@hidden> wrote:
>> >> On Wed, Jun 22, 2016 at 11:43:29AM -0400, Marc Smith wrote:
>> >>> Hi,
>> >>>
>> >>> I have a CDK application and I am experiencing the classic
>> >>> "Line-drawing characters come out as x's and q's" problem with PuTTY.
>> >>> I believe I have configured my system correctly for UTF-8 and I am
>> >>> only using ncurses/CDK with wide-character support (only libncursesw
>> >>> and libcdkw).
>> >>>
>> >>> I only experience this problem with PuTTY when in UTF-8 mode...
>> >>> switching to Latin1 makes the line characters appear correctly. The
>> >>> TERM is 'xterm' when using PuTTY (default). The default "Use Unicode
>> >>> line drawing points" option is set in PuTTY.
>> >>
>> >> It sounds like this scenario:
>> >>
>> >> http://stackoverflow.com/questions/37845244/acs-characters-not-working-in-putty-even-with-export-ncurses-no-utf8-acs-1/37847838#37847838
>> >>
>> >> --
>> >> Thomas E. Dickey <address@hidden>
>> >> http://invisible-island.net
>> >> ftp://invisible-island.net
>
> --
> Thomas E. Dickey <address@hidden>
> http://invisible-island.net
> ftp://invisible-island.net