Vendor import ncurses 6.1-20200118vendor/ncurses/6.1-20200118

1 files changed, 475 insertions, 153 deletions

diff --git a/ncurses/base/lib_mouse.c b/ncurses/base/lib_mouse.c
index b0e0f613ebc3..34723f08941a 100644
--- a/ncurses/base/lib_mouse.c
+++ b/ncurses/base/lib_mouse.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2012,2013 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2018,2019 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -84,7 +84,7 @@
 #define CUR SP_TERMTYPE
 #endif
 
-MODULE_ID("$Id: lib_mouse.c,v 1.141 2013/09/21 19:09:19 tom Exp $")
+MODULE_ID("$Id: lib_mouse.c,v 1.183 2019/08/10 17:11:50 tom Exp $")
 
 #include <tic.h>
 
@@ -225,7 +225,7 @@ write_event(SCREEN *sp, int down, int button, int x, int y)
     char buf[6];
     unsigned long ignore;
 
-    strcpy(buf, "\033[M");	/* should be the same as key_mouse */
+    _nc_STRCPY(buf, "\033[M", sizeof(buf));	/* should be the same as key_mouse */
     buf[3] = ' ' + (button - 1) + (down ? 0 : 0x40);
     buf[4] = ' ' + x - LEFT_COL + 1;
     buf[5] = ' ' + y - TOP_ROW + 1;
@@ -376,9 +376,46 @@ static void
 init_xterm_mouse(SCREEN *sp)
 {
     sp->_mouse_type = M_XTERM;
+    sp->_mouse_format = MF_X10;
     sp->_mouse_xtermcap = tigetstr("XM");
-    if (!VALID_STRING(sp->_mouse_xtermcap))
+    if (VALID_STRING(sp->_mouse_xtermcap)) {
+	char *code = strstr(sp->_mouse_xtermcap, "[?");
+	if (code != 0) {
+	    code += 2;
+	    while ((*code >= '0') && (*code <= '9')) {
+		char *next = code;
+		while ((*next >= '0') && (*next <= '9')) {
+		    ++next;
+		}
+		if (!strncmp(code, "1006", (size_t) (next - code))) {
+		    sp->_mouse_format = MF_SGR1006;
+		}
+#ifdef EXP_XTERM_1005
+		if (!strncmp(code, "1005", (size_t) (next - code))) {
+		    sp->_mouse_format = MF_XTERM_1005;
+		}
+#endif
+		if (*next == ';') {
+		    while (*next == ';') {
+			++next;
+		    }
+		    code = next;
+		} else {
+		    break;
+		}
+	    }
+	}
+    } else {
+	int code = tigetnum("XM");
+	switch (code) {
+	case 1006:
+	    break;
+	default:
+	    code = 1000;
+	    break;
+	}
 	sp->_mouse_xtermcap = "\033[?1000%?%p1%{1}%=%th%el%;";
+    }
 }
 #endif
 
@@ -395,22 +432,22 @@ enable_xterm_mouse(SCREEN *sp, int enable)
 
 #if USE_GPM_SUPPORT
 static bool
-allow_gpm_mouse(SCREEN *sp)
+allow_gpm_mouse(SCREEN *sp GCC_UNUSED)
 {
     bool result = FALSE;
 
 #if USE_WEAK_SYMBOLS
     /* Danger Robinson: do not use dlopen for libgpm if already loaded */
-    if ((Gpm_Wgetch)) {
+    if ((Gpm_Wgetch) != 0) {
 	if (!sp->_mouse_gpm_loaded) {
 	    T(("GPM library was already dlopen'd, not by us"));
 	}
     } else
 #endif
 	/* GPM does printf's without checking if stdout is a terminal */
-    if (isatty(fileno(stdout))) {
-	char *list = getenv("NCURSES_GPM_TERMS");
-	char *env = getenv("TERM");
+    if (NC_ISATTY(fileno(stdout))) {
+	const char *list = getenv("NCURSES_GPM_TERMS");
+	const char *env = getenv("TERM");
 	if (list != 0) {
 	    if (env != 0) {
 		result = _nc_name_match(list, env, "|:");
@@ -449,10 +486,17 @@ load_gpm_library(SCREEN *sp)
 {
     sp->_mouse_gpm_found = FALSE;
     if ((sp->_dlopen_gpm = dlopen(LIBGPM_SONAME, my_RTLD)) != 0) {
+#if (defined(__GNUC__) && (__GNUC__ >= 5)) || defined(__clang__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
 	if (GET_DLSYM(gpm_fd) == 0 ||
 	    GET_DLSYM(Gpm_Open) == 0 ||
 	    GET_DLSYM(Gpm_Close) == 0 ||
 	    GET_DLSYM(Gpm_GetEvent) == 0) {
+#if (defined(__GNUC__) && (__GNUC__ >= 5)) || defined(__clang__)
+#pragma GCC diagnostic pop
+#endif
 	    T(("GPM initialization failed: %s", dlerror()));
 	    unload_gpm_library(sp);
 	} else {
@@ -560,8 +604,8 @@ initialize_mousetype(SCREEN *sp)
     /* OS/2 VIO */
 #if USE_EMX_MOUSE
     if (!sp->_emxmouse_thread
-	&& strstr(TerminalOf(sp)->type.term_names, "xterm") == 0
-	&& key_mouse) {
+	&& strstr(SP_TERMTYPE term_names, "xterm") == 0
+	&& NonEmpty(key_mouse)) {
 	int handles[2];
 
 	if (pipe(handles) < 0) {
@@ -571,7 +615,7 @@ initialize_mousetype(SCREEN *sp)
 	    int rc;
 
 	    if (!sp->_emxmouse_buttons[0]) {
-		char *s = getenv("MOUSE_BUTTONS_123");
+		const char *s = getenv("MOUSE_BUTTONS_123");
 
 		sp->_emxmouse_buttons[0] = 1;
 		if (s && strlen(s) >= 3) {
@@ -604,13 +648,14 @@ initialize_mousetype(SCREEN *sp)
 
 #if USE_SYSMOUSE
     {
+	static char dev_tty[] = "/dev/tty";
 	struct mouse_info the_mouse;
 	char *the_device = 0;
 
-	if (isatty(sp->_ifd))
+	if (NC_ISATTY(sp->_ifd))
 	    the_device = ttyname(sp->_ifd);
 	if (the_device == 0)
-	    the_device = "/dev/tty";
+	    the_device = dev_tty;
 
 	sp->_mouse_fd = open(the_device, O_RDWR);
 
@@ -668,15 +713,12 @@ initialize_mousetype(SCREEN *sp)
 #endif /* USE_SYSMOUSE */
 
 #ifdef USE_TERM_DRIVER
-    CallDriver(sp, initmouse);
+    CallDriver(sp, td_initmouse);
 #else
     /* we know how to recognize mouse events under "xterm" */
-    if (key_mouse != 0) {
-	if (!strcmp(key_mouse, xterm_kmous)
-	    || strstr(TerminalOf(sp)->type.term_names, "xterm") != 0) {
-	    init_xterm_mouse(sp);
-	}
-    } else if (strstr(TerminalOf(sp)->type.term_names, "xterm") != 0) {
+    if (NonEmpty(key_mouse)) {
+	init_xterm_mouse(sp);
+    } else if (strstr(SP_TERMTYPE term_names, "xterm") != 0) {
 	if (_nc_add_to_try(&(sp->_keytry), xterm_kmous, KEY_MOUSE) == OK)
 	    init_xterm_mouse(sp);
     }
@@ -690,10 +732,11 @@ _nc_mouse_init(SCREEN *sp)
 /* initialize the mouse */
 {
     bool result = FALSE;
-    int i;
 
     if (sp != 0) {
 	if (!sp->_mouse_initialized) {
+	    int i;
+
 	    sp->_mouse_initialized = TRUE;
 
 	    TR(MY_TRACE, ("_nc_mouse_init() called"));
@@ -846,173 +889,431 @@ _nc_mouse_event(SCREEN *sp)
     return result;		/* true if we found an event */
 }
 
+#if USE_EMX_MOUSE
+#define PRESS_POSITION(n) \
+    do { \
+	    eventp->bstate = MASK_PRESS(n); \
+	    sp->_mouse_bstate |= MASK_PRESS(n); \
+	    if (button & 0x40) { \
+		    eventp->bstate = MASK_RELEASE(n); \
+		    sp->_mouse_bstate &= ~MASK_PRESS(n); \
+	    } \
+    } while (0)
+#else
+#define PRESS_POSITION(n) \
+    do { \
+	    eventp->bstate = (mmask_t) ((sp->_mouse_bstate & MASK_PRESS(n)) \
+				    ? REPORT_MOUSE_POSITION \
+				    : MASK_PRESS(n)); \
+	    sp->_mouse_bstate |= MASK_PRESS(n); \
+    } while (0)
+#endif
+
 static bool
-_nc_mouse_inline(SCREEN *sp)
-/* mouse report received in the keyboard stream -- parse its info */
+handle_wheel(SCREEN *sp, MEVENT * eventp, int button, int wheel)
 {
-    int b;
-    bool result = FALSE;
-    MEVENT *eventp = sp->_mouse_eventp;
+    bool result = TRUE;
+
+    switch (button & 3) {
+    case 0:
+	if (wheel) {
+	    eventp->bstate = MASK_PRESS(4);
+	    /* Do not record in sp->_mouse_bstate; there will be no
+	     * corresponding release event.
+	     */
+	} else {
+	    PRESS_POSITION(1);
+	}
+	break;
+    case 1:
+	if (wheel) {
+#if NCURSES_MOUSE_VERSION == 2
+	    eventp->bstate = MASK_PRESS(5);
+	    /* See comment above for button 4 */
+#else
+	    /* Ignore this event as it is not a true press of the button */
+	    eventp->bstate = REPORT_MOUSE_POSITION;
+#endif
+	} else {
+	    PRESS_POSITION(2);
+	}
+	break;
+    case 2:
+	PRESS_POSITION(3);
+	break;
+    default:
+	result = FALSE;
+	break;
+    }
+    return result;
+}
 
-    TR(MY_TRACE, ("_nc_mouse_inline() called"));
+static bool
+decode_X10_bstate(SCREEN *sp, MEVENT * eventp, unsigned intro)
+{
+    bool result;
 
-    if (sp->_mouse_type == M_XTERM) {
-	unsigned char kbuf[4];
-	size_t grabbed;
-	int res;
+    eventp->bstate = 0;
+
+    if (!handle_wheel(sp, eventp, (int) intro, (intro & 96) == 96)) {
 
-	/* This code requires that your xterm entry contain the kmous
-	 * capability and that it be set to the \E[M documented in the
-	 * Xterm Control Sequences reference.  This is how we
-	 * arrange for mouse events to be reported via a KEY_MOUSE
-	 * return value from wgetch().  After this value is received,
-	 * _nc_mouse_inline() gets called and is immediately
-	 * responsible for parsing the mouse status information
-	 * following the prefix.
-	 *
-	 * The following quotes from the ctrlseqs.ms document in the
-	 * X distribution, describing the X mouse tracking feature:
-	 *
-	 * Parameters for all mouse tracking escape sequences
-	 * generated by xterm encode numeric parameters in a single
-	 * character as value+040.  For example, !  is 1.
-	 *
-	 * On button press or release, xterm sends ESC [ M CbCxCy.
-	 * The low two bits of Cb encode button information: 0=MB1
-	 * pressed, 1=MB2 pressed, 2=MB3 pressed, 3=release.  The
-	 * upper bits encode what modifiers were down when the
-	 * button was pressed and are added together.  4=Shift,
-	 * 8=Meta, 16=Control.  Cx and Cy are the x and y coordinates
-	 * of the mouse event.  The upper left corner is (1,1).
-	 *
-	 * (End quote)  By the time we get here, we've eaten the
-	 * key prefix.  FYI, the loop below is necessary because
-	 * mouse click info isn't guaranteed to present as a
-	 * single clist item.
-	 *
-	 * Wheel mice may return buttons 4 and 5 when the wheel is turned.
-	 * We encode those as button presses.
+	/*
+	 * Release events aren't reported for individual buttons, just for
+	 * the button set as a whole.  However, because there are normally
+	 * no mouse events under xterm that intervene between press and
+	 * release, we can infer the button actually released by looking at
+	 * the previous event.
 	 */
+	if (sp->_mouse_bstate & BUTTON_PRESSED) {
+	    int b;
+
+	    eventp->bstate = BUTTON_RELEASED;
+	    for (b = 1; b <= MAX_BUTTONS; ++b) {
+		if (!(sp->_mouse_bstate & MASK_PRESS(b)))
+		    eventp->bstate &= ~MASK_RELEASE(b);
+	    }
+	    sp->_mouse_bstate = 0;
+	} else {
+	    /*
+	     * xterm will return a stream of release-events to let the
+	     * application know where the mouse is going, if private mode
+	     * 1002 or 1003 is enabled.
+	     */
+	    eventp->bstate = REPORT_MOUSE_POSITION;
+	}
+    }
+
+    if (intro & 4) {
+	eventp->bstate |= BUTTON_SHIFT;
+    }
+    if (intro & 8) {
+	eventp->bstate |= BUTTON_ALT;
+    }
+    if (intro & 16) {
+	eventp->bstate |= BUTTON_CTRL;
+    }
+    result = (eventp->bstate & REPORT_MOUSE_POSITION) ? TRUE : FALSE;
+    return result;
+}
+
+/* This code requires that your xterm entry contain the kmous capability and
+ * that it be set to the \E[M documented in the Xterm Control Sequences
+ * reference.  This is how we arrange for mouse events to be reported via a
+ * KEY_MOUSE return value from wgetch().  After this value is received,
+ * _nc_mouse_inline() gets called and is immediately responsible for parsing
+ * the mouse status information following the prefix.
+ *
+ * The following quotes from the ctlseqs.ms document in the XTerm distribution,
+ * describing the mouse tracking feature:
+ *
+ * Parameters for all mouse tracking escape sequences generated by xterm encode
+ * numeric parameters in a single character as value+040.  For example, ! is
+ * 1.
+ *
+ * On button press or release, xterm sends ESC [ M CbCxCy.  The low two bits of
+ * Cb encode button information:  0=MB1 pressed, 1=MB2 pressed, 2=MB3 pressed,
+ * 3=release.  The upper bits encode what modifiers were down when the button
+ * was pressed and are added together.  4=Shift, 8=Meta, 16=Control.  Cx and Cy
+ * are the x and y coordinates of the mouse event.  The upper left corner is
+ * (1,1).
+ *
+ * (End quote) By the time we get here, we've eaten the key prefix.  FYI, the
+ * loop below is necessary because mouse click info isn't guaranteed to present
+ * as a single clist item.
+ *
+ * Wheel mice may return buttons 4 and 5 when the wheel is turned.  We encode
+ * those as button presses.
+ */
+static bool
+decode_xterm_X10(SCREEN *sp, MEVENT * eventp)
+{
+#define MAX_KBUF 3
+    unsigned char kbuf[MAX_KBUF + 1];
+    size_t grabbed;
+    int res;
+    bool result;
+
 # if USE_PTHREADS_EINTR
 #  if USE_WEAK_SYMBOLS
-	if ((pthread_self) && (pthread_kill) && (pthread_equal))
+    if ((pthread_self) && (pthread_kill) && (pthread_equal))
 #  endif
-	    _nc_globals.read_thread = pthread_self();
+	_nc_globals.read_thread = pthread_self();
 # endif
-	for (grabbed = 0; grabbed < 3; grabbed += (size_t) res) {
+    for (grabbed = 0; grabbed < MAX_KBUF; grabbed += (size_t) res) {
 
-	    /* For VIO mouse we add extra bit 64 to disambiguate button-up. */
+	/* For VIO mouse we add extra bit 64 to disambiguate button-up. */
+	res = (int) read(
 #if USE_EMX_MOUSE
-	    res = (int) read(M_FD(sp) >= 0 ? M_FD(sp) : sp->_ifd, &kbuf, 3);
+			    (M_FD(sp) >= 0) ? M_FD(sp) : sp->_ifd,
 #else
-	    res = (int) read(sp->_ifd, kbuf + grabbed, 3 - grabbed);
+			    sp->_ifd,
 #endif
-	    if (res == -1)
-		break;
-	}
+			    kbuf + grabbed, (size_t) (MAX_KBUF - (int) grabbed));
+	if (res == -1)
+	    break;
+    }
 #if USE_PTHREADS_EINTR
-	_nc_globals.read_thread = 0;
+    _nc_globals.read_thread = 0;
 #endif
-	kbuf[3] = '\0';
+    kbuf[MAX_KBUF] = '\0';
 
-	TR(TRACE_IEVENT,
-	   ("_nc_mouse_inline sees the following xterm data: '%s'", kbuf));
+    TR(TRACE_IEVENT,
+       ("_nc_mouse_inline sees the following xterm data: '%s'", kbuf));
 
-	/* there's only one mouse... */
-	eventp->id = NORMAL_EVENT;
+    /* there's only one mouse... */
+    eventp->id = NORMAL_EVENT;
 
-	/* processing code goes here */
-	eventp->bstate = 0;
+    result = decode_X10_bstate(sp, eventp, kbuf[0]);
 
+    eventp->x = (kbuf[1] - ' ') - 1;
+    eventp->y = (kbuf[2] - ' ') - 1;
+
+    return result;
+}
+
+#ifdef EXP_XTERM_1005
+/*
+ * This is identical to X10/X11 responses except that there are two UTF-8
+ * characters storing the ordinates instead of two bytes.
+ */
+static bool
+decode_xterm_1005(SCREEN *sp, MEVENT * eventp)
+{
+    char kbuf[80];
+    size_t grabbed;
+    size_t limit = (sizeof(kbuf) - 1);
+    unsigned coords[2];
+    bool result;
+
+    coords[0] = 0;
+    coords[1] = 0;
+
+# if USE_PTHREADS_EINTR
+#  if USE_WEAK_SYMBOLS
+    if ((pthread_self) && (pthread_kill) && (pthread_equal))
+#  endif
+	_nc_globals.read_thread = pthread_self();
+# endif
+    for (grabbed = 0; grabbed < limit;) {
+	int res;
+
+	res = (int) read(
 #if USE_EMX_MOUSE
-#define PRESS_POSITION(n) \
-	do { \
-		eventp->bstate = MASK_PRESS(n); \
-		sp->_mouse_bstate |= MASK_PRESS(n); \
-		if (kbuf[0] & 0x40) { \
-			eventp->bstate = MASK_RELEASE(n); \
-			sp->_mouse_bstate &= ~MASK_PRESS(n); \
-		} \
-	} while (0)
+			    (M_FD(sp) >= 0) ? M_FD(sp) : sp->_ifd,
 #else
-#define PRESS_POSITION(n) \
-	do { \
-		eventp->bstate = (mmask_t) (sp->_mouse_bstate & MASK_PRESS(n) \
-					? REPORT_MOUSE_POSITION \
-					: MASK_PRESS(n)); \
-		sp->_mouse_bstate |= MASK_PRESS(n); \
-	} while (0)
+			    sp->_ifd,
 #endif
+			    (kbuf + grabbed), (size_t) 1);
+	if (res == -1)
+	    break;
+	grabbed += (size_t) res;
+	if (grabbed > 1) {
+	    size_t check = 1;
+	    int n;
 
-	switch (kbuf[0] & 0x3) {
-	case 0x0:
-	    if ((kbuf[0] & 96) == 96) {
-		eventp->bstate = MASK_PRESS(4);
-		/* Do not record in sp->_mouse_bstate; there will be no
-		 * corresponding release event.
-		 */
-	    } else {
-		PRESS_POSITION(1);
+	    for (n = 0; n < 2; ++n) {
+		int rc;
+
+		if (check >= grabbed)
+		    break;
+		rc = _nc_conv_to_utf32(&coords[n], kbuf + check, (unsigned)
+				       (grabbed - check));
+		if (!rc)
+		    break;
+		check += (size_t) rc;
 	    }
-	    break;
+	    if (n >= 2)
+		break;
+	}
+    }
+#if USE_PTHREADS_EINTR
+    _nc_globals.read_thread = 0;
+#endif
 
-	case 0x1:
-	    if ((kbuf[0] & 96) == 96) {
-#if NCURSES_MOUSE_VERSION == 2
-		eventp->bstate = MASK_PRESS(5);
-		/* See comment above for button 4 */
+    TR(TRACE_IEVENT,
+       ("_nc_mouse_inline sees the following xterm data: %s",
+	_nc_visbufn(kbuf, (int) grabbed)));
+
+    /* there's only one mouse... */
+    eventp->id = NORMAL_EVENT;
+
+    result = decode_X10_bstate(sp, eventp, UChar(kbuf[0]));
+
+    eventp->x = (int) (coords[0] - ' ') - 1;
+    eventp->y = (int) (coords[1] - ' ') - 1;
+
+    return result;
+}
+#endif /* EXP_XTERM_1005 */
+
+/*
+ * ECMA-48 section 5.4
+ */
+#define isInter(c) ((c) >= 0x20 && (c) <= 0x2f)
+#define isParam(c) ((c) >= 0x30 && (c) <= 0x3f)
+#define isFinal(c) ((c) >= 0x40 && (c) <= 0x7e)
+
+#define MAX_PARAMS 9
+
+typedef struct {
+    int nerror;			/* nonzero if there are unexpected chars */
+    int nparam;			/* number of numeric parameters */
+    int params[MAX_PARAMS];
+    int final;			/* the final-character */
+} SGR_DATA;
+
+static bool
+read_SGR(SCREEN *sp, SGR_DATA * result)
+{
+    char kbuf[80];		/* bigger than any possible mouse response */
+    int grabbed = 0;
+    int ch = 0;
+    int now = -1;
+    int marker = 1;
+
+    memset(result, 0, sizeof(*result));
+# if USE_PTHREADS_EINTR
+#  if USE_WEAK_SYMBOLS
+    if ((pthread_self) && (pthread_kill) && (pthread_equal))
+#  endif
+	_nc_globals.read_thread = pthread_self();
+# endif
+
+    do {
+	int res;
+
+	res = (int) read(
+#if USE_EMX_MOUSE
+			    (M_FD(sp) >= 0) ? M_FD(sp) : sp->_ifd,
 #else
-		/* Ignore this event as it is not a true press of the button */
-		eventp->bstate = REPORT_MOUSE_POSITION;
+			    sp->_ifd,
 #endif
-	    } else {
-		PRESS_POSITION(2);
+			    (kbuf + grabbed), (size_t) 1);
+	if (res == -1)
+	    break;
+	if ((grabbed + MAX_KBUF) >= (int) sizeof(kbuf)) {
+	    result->nerror++;
+	    break;
+	}
+	ch = UChar(kbuf[grabbed]);
+	kbuf[grabbed + 1] = 0;
+	switch (ch) {
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	    if (marker) {
+		++now;
+		result->nparam = (now + 1);
 	    }
+	    marker = 0;
+	    result->params[now] = (result->params[now] * 10) + (ch - '0');
 	    break;
-
-	case 0x2:
-	    PRESS_POSITION(3);
+	case ';':
+	    if (marker) {
+		++now;
+		result->nparam = (now + 1);
+	    }
+	    marker = 1;
 	    break;
-
-	case 0x3:
-	    /*
-	     * Release events aren't reported for individual buttons, just for
-	     * the button set as a whole.  However, because there are normally
-	     * no mouse events under xterm that intervene between press and
-	     * release, we can infer the button actually released by looking at
-	     * the previous event.
-	     */
-	    if (sp->_mouse_bstate & BUTTON_PRESSED) {
-		eventp->bstate = BUTTON_RELEASED;
-		for (b = 1; b <= MAX_BUTTONS; ++b) {
-		    if (!(sp->_mouse_bstate & MASK_PRESS(b)))
-			eventp->bstate &= ~MASK_RELEASE(b);
-		}
-		sp->_mouse_bstate = 0;
-	    } else {
+	default:
+	    if (ch < 32 || ch > 126) {
 		/*
-		 * XFree86 xterm will return a stream of release-events to
-		 * let the application know where the mouse is going, if the
-		 * private mode 1002 or 1003 is enabled.
+		 * Technically other characters could be interspersed in the
+		 * response.  Ignore those for now.
 		 */
-		eventp->bstate = REPORT_MOUSE_POSITION;
+		result->nerror++;
+		continue;
+	    } else if (isFinal(ch)) {
+		if (marker) {
+		    result->nparam++;
+		}
+		result->final = ch;
+	    } else {
+		result->nerror++;
 	    }
 	    break;
 	}
-	result = (eventp->bstate & REPORT_MOUSE_POSITION) ? TRUE : FALSE;
+	++grabbed;
+    } while (!isFinal(ch));
+#if USE_PTHREADS_EINTR
+    _nc_globals.read_thread = 0;
+#endif
 
-	if (kbuf[0] & 4) {
+    kbuf[++grabbed] = 0;
+    TR(TRACE_IEVENT,
+       ("_nc_mouse_inline sees the following xterm data: '%s'", kbuf));
+    return (grabbed > 0) && (result->nerror == 0);
+}
+
+static bool
+decode_xterm_SGR1006(SCREEN *sp, MEVENT * eventp)
+{
+    SGR_DATA data;
+    bool result = FALSE;
+    if (read_SGR(sp, &data)) {
+	int b = data.params[0];
+	int b3 = 1 + (b & 3);
+
+	eventp->id = NORMAL_EVENT;
+	if (data.final == 'M') {
+	    (void) handle_wheel(sp, eventp, b, (b & 64) == 64);
+	} else {
+	    mmask_t pressed = (mmask_t) NCURSES_MOUSE_MASK(b3, NCURSES_BUTTON_PRESSED);
+	    mmask_t release = (mmask_t) NCURSES_MOUSE_MASK(b3, NCURSES_BUTTON_RELEASED);
+	    if (sp->_mouse_bstate & pressed) {
+		eventp->bstate = release;
+		sp->_mouse_bstate &= ~pressed;
+	    } else {
+		eventp->bstate = REPORT_MOUSE_POSITION;
+	    }
+	}
+	if (b & 4) {
 	    eventp->bstate |= BUTTON_SHIFT;
 	}
-	if (kbuf[0] & 8) {
+	if (b & 8) {
 	    eventp->bstate |= BUTTON_ALT;
 	}
-	if (kbuf[0] & 16) {
+	if (b & 16) {
 	    eventp->bstate |= BUTTON_CTRL;
 	}
+	result = (eventp->bstate & REPORT_MOUSE_POSITION) ? TRUE : FALSE;
+	eventp->x = (data.params[1] ? (data.params[1] - 1) : 0);
+	eventp->y = (data.params[2] ? (data.params[2] - 1) : 0);
+    }
+    return result;
+}
+
+static bool
+_nc_mouse_inline(SCREEN *sp)
+/* mouse report received in the keyboard stream -- parse its info */
+{
+    bool result = FALSE;
+    MEVENT *eventp = sp->_mouse_eventp;
+
+    TR(MY_TRACE, ("_nc_mouse_inline() called"));
+
+    if (sp->_mouse_type == M_XTERM) {
+	switch (sp->_mouse_format) {
+	case MF_X10:
+	    result = decode_xterm_X10(sp, eventp);
+	    break;
+	case MF_SGR1006:
+	    result = decode_xterm_SGR1006(sp, eventp);
+	    break;
+#ifdef EXP_XTERM_1005
+	case MF_XTERM_1005:
+	    result = decode_xterm_1005(sp, eventp);
+	    break;
+#endif
+	}
 
-	eventp->x = (kbuf[1] - ' ') - 1;
-	eventp->y = (kbuf[2] - ' ') - 1;
 	TR(MY_TRACE,
 	   ("_nc_mouse_inline: primitive mouse-event %s has slot %ld",
 	    _nc_tracemouse(sp, eventp),
@@ -1020,9 +1321,23 @@ _nc_mouse_inline(SCREEN *sp)
 
 	/* bump the next-free pointer into the circular list */
 	sp->_mouse_eventp = NEXT(eventp);
-#if 0				/* this return would be needed for QNX's mods to lib_getch.c */
-	return (TRUE);
-#endif
+
+	if (!result) {
+	    /* If this event is from a wheel-mouse, treat it like position
+	     * reports and avoid waiting for the release-events which will
+	     * never come.
+	     */
+	    if (eventp->bstate & BUTTON_PRESSED) {
+		int b;
+
+		for (b = 4; b <= MAX_BUTTONS; ++b) {
+		    if ((eventp->bstate & MASK_PRESS(b))) {
+			result = TRUE;
+			break;
+		    }
+		}
+	    }
+	}
     }
 
     return (result);
@@ -1445,11 +1760,14 @@ NCURSES_EXPORT(int)
 NCURSES_SP_NAME(getmouse) (NCURSES_SP_DCLx MEVENT * aevent)
 {
     int result = ERR;
+    MEVENT *eventp;
 
     T((T_CALLED("getmouse(%p,%p)"), (void *) SP_PARM, (void *) aevent));
 
-    if ((aevent != 0) && (SP_PARM != 0) && (SP_PARM->_mouse_type != M_NONE)) {
-	MEVENT *eventp = SP_PARM->_mouse_eventp;
+    if ((aevent != 0) &&
+	(SP_PARM != 0) &&
+	(SP_PARM->_mouse_type != M_NONE) &&
+	(eventp = SP_PARM->_mouse_eventp) != 0) {
 	/* compute the current-event pointer */
 	MEVENT *prev = PREV(eventp);
 
@@ -1498,11 +1816,13 @@ NCURSES_EXPORT(int)
 NCURSES_SP_NAME(ungetmouse) (NCURSES_SP_DCLx MEVENT * aevent)
 {
     int result = ERR;
+    MEVENT *eventp;
 
     T((T_CALLED("ungetmouse(%p,%p)"), (void *) SP_PARM, (void *) aevent));
 
-    if (aevent != 0 && SP_PARM != 0) {
-	MEVENT *eventp = SP_PARM->_mouse_eventp;
+    if (aevent != 0 &&
+	SP_PARM != 0 &&
+	(eventp = SP_PARM->_mouse_eventp) != 0) {
 
 	/* stick the given event in the next-free slot */
 	*eventp = *aevent;
@@ -1530,7 +1850,6 @@ NCURSES_SP_NAME(mousemask) (NCURSES_SP_DCLx mmask_t newmask, mmask_t * oldmask)
 /* set the mouse event mask */
 {
     mmask_t result = 0;
-    int b;
 
     T((T_CALLED("mousemask(%p,%#lx,%p)"),
        (void *) SP_PARM,
@@ -1543,7 +1862,10 @@ NCURSES_SP_NAME(mousemask) (NCURSES_SP_DCLx mmask_t newmask, mmask_t * oldmask)
 
 	if (newmask || SP_PARM->_mouse_initialized) {
 	    _nc_mouse_init(SP_PARM);
+
 	    if (SP_PARM->_mouse_type != M_NONE) {
+		int b;
+
 		result = newmask &
 		    (REPORT_MOUSE_POSITION
 		     | BUTTON_ALT