forked from aniani/vim
patch 9.1.0321: Garbled output on serial terminals with XON/XOFF flow control
Problem: When used terminal with XON/XOFF flow control, vim tries to
still make CTRL-S mapping available, which results in severe
screen corruption, especially on large redraws, and even
spurious inputs (John Tsiombikas)
Solution: Disallow CTRL-S mapping if such terminal is recognized.
Don't remove IXON from the bitmask inversion.
(Anton Sharonov)
*** When started like this:
TERM=vt420 vim
:set termcap
shows "t_xon=y"
map <C-S> :echo "abc"<CR>
does nothing (after <C-S> output freezes and subsequent <C-Q>
unfreezes it)
*** When started like this:
TERM=xterm vim
:set termcap
shows "t_xon="
map <C-S> :echo "abc"<CR>
works (after <C-S> one see "abc" string echo-ed)
fixes: #12674
closes: #14542
Signed-off-by: Anton Sharonov <anton.sharonov@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Anton Sharonov
Christian Brabandt
parent
4052474a1b
commit
49528da8a6
@ -1157,6 +1157,7 @@ $quote eval.txt /*$quote*
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't_vi' term.txt /*'t_vi'*
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't_vs' term.txt /*'t_vs'*
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't_xn' term.txt /*'t_xn'*
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't_xo' term.txt /*'t_xo'*
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't_xs' term.txt /*'t_xs'*
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'ta' options.txt /*'ta'*
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'tabline' options.txt /*'tabline'*
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@ -10403,6 +10404,7 @@ t_ve term.txt /*t_ve*
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t_vi term.txt /*t_vi*
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t_vs term.txt /*t_vs*
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t_xn term.txt /*t_xn*
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t_xo term.txt /*t_xo*
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t_xs term.txt /*t_xs*
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tab intro.txt /*tab*
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tab-page tabpage.txt /*tab-page*
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@ -1,4 +1,4 @@
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*term.txt* For Vim version 9.1. Last change: 2024 Feb 28
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*term.txt* For Vim version 9.1. Last change: 2024 Apr 14
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VIM REFERENCE MANUAL by Bram Moolenaar
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@ -382,7 +382,7 @@ The options are listed below. The associated termcap code is always equal to
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the last two characters of the option name. Only one termcap code is
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required: Cursor motion, 't_cm'.
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The options 't_da', 't_db', 't_ms', 't_xs', 't_xn' represent flags in the
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The options 't_da', 't_db', 't_ms', 't_xs', 't_xn', 't_xo' represent flags in the
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termcap. When the termcap flag is present, the option will be set to "y".
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But any non-empty string means that the flag is set. An empty string means
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that the flag is not set. 't_CS' works like this too, but it isn't a termcap
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@ -441,6 +441,11 @@ OUTPUT CODES *terminal-output-codes*
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*t_xn* *'t_xn'*
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t_xn if non-empty, writing a character at the last screen cell
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does not cause scrolling
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*t_xo* *'t_xo'*
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t_xo if non-empty, terminal uses xon/xoff handshaking, mapping
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CTRL-S will not be possible then, since it is used for flow
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control (used by vt420 terminal). Setting this flag has only
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an effect when starting Vim.
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t_ZH italics mode *t_ZH* *'t_ZH'*
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t_ZR italics end *t_ZR* *'t_ZR'*
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@ -1,4 +1,4 @@
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*version9.txt* For Vim version 9.1. Last change: 2024 Apr 08
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*version9.txt* For Vim version 9.1. Last change: 2024 Apr 14
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VIM REFERENCE MANUAL by Bram Moolenaar
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@ -41591,6 +41591,7 @@ Commands: ~
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Options: ~
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'winfixbuf' Keep buffer focused in a window
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't_xo' Terminal uses XON/XOFF handshaking (e.g. vt420).
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==============================================================================
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INCOMPATIBLE CHANGES *incompatible-9.2*
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@ -3014,6 +3014,7 @@ static struct vimoption options[] =
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p_term("t_8f", T_8F)
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p_term("t_8b", T_8B)
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p_term("t_8u", T_8U)
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p_term("t_xo", T_XON)
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// terminal key codes are not in here
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@ -3766,7 +3766,8 @@ mch_settmode(tmode_T tmode)
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{
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// ~ICRNL enables typing ^V^M
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// ~IXON disables CTRL-S stopping output, so that it can be mapped.
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tnew.c_iflag &= ~(ICRNL | IXON);
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tnew.c_iflag &= ~(ICRNL |
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(T_XON == NULL || *T_XON == NUL ? IXON : 0));
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tnew.c_lflag &= ~(ICANON | ECHO | ISIG | ECHOE
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# if defined(IEXTEN)
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| IEXTEN // IEXTEN enables typing ^V on SOLARIS
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@ -1798,6 +1798,8 @@ get_term_entries(int *height, int *width)
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T_DA = (char_u *)"y";
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if ((T_UT == NULL || T_UT == empty_option) && tgetflag("ut") > 0)
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T_UT = (char_u *)"y";
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if ((T_XON == NULL || T_XON == empty_option) && tgetflag("xo") > 0)
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T_XON = (char_u *)"y";
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/*
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* get key codes
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@ -115,10 +115,11 @@ enum SpecialKey
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KS_SRI, // restore icon text
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KS_FD, // disable focus event tracking
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KS_FE, // enable focus event tracking
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KS_CF // set terminal alternate font
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KS_CF, // set terminal alternate font
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KS_XON // terminal uses xon/xoff handshaking
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};
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#define KS_LAST KS_CF
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#define KS_LAST KS_XON
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/*
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* the terminal capabilities are stored in this array
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@ -224,6 +225,7 @@ extern char_u *(term_strings[]); // current terminal strings
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#define T_SRI (TERM_STR(KS_SRI)) // restore icon text
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#define T_FD (TERM_STR(KS_FD)) // disable focus event tracking
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#define T_FE (TERM_STR(KS_FE)) // enable focus event tracking
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#define T_XON (TERM_STR(KS_XON)) // terminal uses xon/xoff handshaking
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typedef enum {
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TMODE_COOK, // terminal mode for external cmds and Ex mode
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@ -3792,4 +3792,22 @@ func Test_buffer_completion()
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call assert_equal("\"b Xbuf_complete/Foobar.c Xbuf_complete/MyFoobar.c AFoobar.h", @:)
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endfunc
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" :set t_??
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func Test_term_option()
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set wildoptions&
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let _cpo = &cpo
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set cpo-=C
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let expected='"set t_AB t_AF t_AU t_AL t_al t_bc t_BE t_BD t_cd t_ce t_Ce t_CF t_cl t_cm'
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\ .. ' t_Co t_CS t_Cs t_cs t_CV t_da t_db t_DL t_dl t_ds t_Ds t_EC t_EI t_fs t_fd t_fe'
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\ .. ' t_GP t_IE t_IS t_ke t_ks t_le t_mb t_md t_me t_mr t_ms t_nd t_op t_RF t_RB t_RC'
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\ .. ' t_RI t_Ri t_RK t_RS t_RT t_RV t_Sb t_SC t_se t_Sf t_SH t_SI t_Si t_so t_SR t_sr'
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\ .. ' t_ST t_Te t_te t_TE t_ti t_TI t_Ts t_ts t_u7 t_ue t_us t_Us t_ut t_vb t_ve t_vi'
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\ .. ' t_VS t_vs t_WP t_WS t_XM t_xn t_xs t_ZH t_ZR t_8f t_8b t_8u t_xo t_#2 t_#4 t_%i'
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\ .. ' t_*7 t_@7 t_F1 t_F2 t_k1 t_k2 t_k3 t_k4 t_k5 t_k6 t_k7 t_k8 t_k9 t_k; t_kB t_kD'
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\ .. ' t_kI t_kN t_kP t_kb t_kd t_kh t_kl t_kr t_ku'
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call feedkeys(":set t_\<C-A>\<C-B>\"\<CR>", 'tx')
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call assert_equal(expected, @:)
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let &cpo = _cpo
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endfunc
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" vim: shiftwidth=2 sts=2 expandtab
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@ -931,5 +931,25 @@ func Test_terminal_term_start_error()
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delfunc s:term_start_error
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endfunc
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func Test_terminal_vt420()
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CheckRunVimInTerminal
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" For Termcap
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CheckUnix
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let rows=15
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call writefile([':set term=vt420'], 'Xterm420', 'D')
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let buf = RunVimInTerminal('-S Xterm420', #{rows: rows})
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call TermWait(buf, 100)
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call term_sendkeys(buf, ":set t_xo?\<CR>")
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call WaitForAssert({-> assert_match('t_xo=y', term_getline(buf, rows))})
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call StopVimInTerminal(buf)
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call writefile([''], 'Xterm420')
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let buf = RunVimInTerminal('-S Xterm420', #{rows: rows})
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call TermWait(buf, 100)
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call term_sendkeys(buf, ":set t_xo?\<CR>")
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call WaitForAssert({-> assert_match('t_xo=\s\+', term_getline(buf, rows))})
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call StopVimInTerminal(buf)
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endfunc
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" vim: shiftwidth=2 sts=2 expandtab
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@ -704,6 +704,8 @@ static char *(features[]) =
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static int included_patches[] =
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{ /* Add new patch number below this line */
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/**/
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321,
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/**/
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320,
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/**/
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