Adding upstream version 2:9.0.1378.upstream/2%9.0.1378upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1057 insertions, 0 deletions

diff --git a/src/debugger.c b/src/debugger.c
new file mode 100644
index 0000000..b158ecd
--- /dev/null
+++ b/src/debugger.c
@@ -0,0 +1,1057 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+/*
+ * debugger.c: Vim script debugger functions
+ */
+
+#include "vim.h"
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+static int debug_greedy = FALSE;	// batch mode debugging: don't save
+					// and restore typeahead.
+static void do_setdebugtracelevel(char_u *arg);
+static void do_checkbacktracelevel(void);
+static void do_showbacktrace(char_u *cmd);
+
+static char_u *debug_oldval = NULL;	// old and newval for debug expressions
+static char_u *debug_newval = NULL;
+static int     debug_expr   = 0;	// use debug_expr
+
+    int
+has_watchexpr(void)
+{
+    return debug_expr;
+}
+
+/*
+ * do_debug(): Debug mode.
+ * Repeatedly get Ex commands, until told to continue normal execution.
+ */
+    void
+do_debug(char_u *cmd)
+{
+    int		save_msg_scroll = msg_scroll;
+    int		save_State = State;
+    int		save_did_emsg = did_emsg;
+    int		save_cmd_silent = cmd_silent;
+    int		save_msg_silent = msg_silent;
+    int		save_emsg_silent = emsg_silent;
+    int		save_redir_off = redir_off;
+    tasave_T	typeaheadbuf;
+    int		typeahead_saved = FALSE;
+    int		save_ignore_script = 0;
+    int		save_ex_normal_busy;
+    int		n;
+    char_u	*cmdline = NULL;
+    char_u	*p;
+    char_u	*sname;
+    char	*tail = NULL;
+    static int	last_cmd = 0;
+#define CMD_CONT	1
+#define CMD_NEXT	2
+#define CMD_STEP	3
+#define CMD_FINISH	4
+#define CMD_QUIT	5
+#define CMD_INTERRUPT	6
+#define CMD_BACKTRACE	7
+#define CMD_FRAME	8
+#define CMD_UP		9
+#define CMD_DOWN	10
+
+#ifdef ALWAYS_USE_GUI
+    // Can't do this when there is no terminal for input/output.
+    if (!gui.in_use)
+    {
+	// Break as soon as possible.
+	debug_break_level = 9999;
+	return;
+    }
+#endif
+
+    // Make sure we are in raw mode and start termcap mode.  Might have side
+    // effects...
+    settmode(TMODE_RAW);
+    starttermcap();
+
+    ++RedrawingDisabled;	// don't redisplay the window
+    ++no_wait_return;		// don't wait for return
+    did_emsg = FALSE;		// don't use error from debugged stuff
+    cmd_silent = FALSE;		// display commands
+    msg_silent = FALSE;		// display messages
+    emsg_silent = FALSE;	// display error messages
+    redir_off = TRUE;		// don't redirect debug commands
+    save_timeout_for_debugging();   // disable  regexp timeout flag
+
+    State = MODE_NORMAL;
+    debug_mode = TRUE;
+
+    if (!debug_did_msg)
+	msg(_("Entering Debug mode.  Type \"cont\" to continue."));
+    if (debug_oldval != NULL)
+    {
+	smsg(_("Oldval = \"%s\""), debug_oldval);
+	vim_free(debug_oldval);
+	debug_oldval = NULL;
+    }
+    if (debug_newval != NULL)
+    {
+	smsg(_("Newval = \"%s\""), debug_newval);
+	vim_free(debug_newval);
+	debug_newval = NULL;
+    }
+    sname = estack_sfile(ESTACK_NONE);
+    if (sname != NULL)
+	msg((char *)sname);
+    vim_free(sname);
+    if (SOURCING_LNUM != 0)
+	smsg(_("line %ld: %s"), SOURCING_LNUM, cmd);
+    else
+	smsg(_("cmd: %s"), cmd);
+
+    // Repeat getting a command and executing it.
+    for (;;)
+    {
+	msg_scroll = TRUE;
+	need_wait_return = FALSE;
+
+	// Save the current typeahead buffer and replace it with an empty one.
+	// This makes sure we get input from the user here and don't interfere
+	// with the commands being executed.  Reset "ex_normal_busy" to avoid
+	// the side effects of using ":normal". Save the stuff buffer and make
+	// it empty. Set ignore_script to avoid reading from script input.
+	save_ex_normal_busy = ex_normal_busy;
+	ex_normal_busy = 0;
+	if (!debug_greedy)
+	{
+	    save_typeahead(&typeaheadbuf);
+	    typeahead_saved = TRUE;
+	    save_ignore_script = ignore_script;
+	    ignore_script = TRUE;
+	}
+
+	// don't debug any function call, e.g. from an expression mapping
+	n = debug_break_level;
+	debug_break_level = -1;
+
+	vim_free(cmdline);
+	cmdline = getcmdline_prompt('>', NULL, 0, EXPAND_NOTHING, NULL);
+
+	debug_break_level = n;
+	if (typeahead_saved)
+	{
+	    restore_typeahead(&typeaheadbuf, TRUE);
+	    ignore_script = save_ignore_script;
+	}
+	ex_normal_busy = save_ex_normal_busy;
+
+	cmdline_row = msg_row;
+	msg_starthere();
+	if (cmdline != NULL)
+	{
+	    // If this is a debug command, set "last_cmd".
+	    // If not, reset "last_cmd".
+	    // For a blank line use previous command.
+	    p = skipwhite(cmdline);
+	    if (*p != NUL)
+	    {
+		switch (*p)
+		{
+		    case 'c': last_cmd = CMD_CONT;
+			      tail = "ont";
+			      break;
+		    case 'n': last_cmd = CMD_NEXT;
+			      tail = "ext";
+			      break;
+		    case 's': last_cmd = CMD_STEP;
+			      tail = "tep";
+			      break;
+		    case 'f':
+			      last_cmd = 0;
+			      if (p[1] == 'r')
+			      {
+				  last_cmd = CMD_FRAME;
+				  tail = "rame";
+			      }
+			      else
+			      {
+				  last_cmd = CMD_FINISH;
+				  tail = "inish";
+			      }
+			      break;
+		    case 'q': last_cmd = CMD_QUIT;
+			      tail = "uit";
+			      break;
+		    case 'i': last_cmd = CMD_INTERRUPT;
+			      tail = "nterrupt";
+			      break;
+		    case 'b': last_cmd = CMD_BACKTRACE;
+			      if (p[1] == 't')
+				  tail = "t";
+			      else
+				  tail = "acktrace";
+			      break;
+		    case 'w': last_cmd = CMD_BACKTRACE;
+			      tail = "here";
+			      break;
+		    case 'u': last_cmd = CMD_UP;
+			      tail = "p";
+			      break;
+		    case 'd': last_cmd = CMD_DOWN;
+			      tail = "own";
+			      break;
+		    default: last_cmd = 0;
+		}
+		if (last_cmd != 0)
+		{
+		    // Check that the tail matches.
+		    ++p;
+		    while (*p != NUL && *p == *tail)
+		    {
+			++p;
+			++tail;
+		    }
+		    if (ASCII_ISALPHA(*p) && last_cmd != CMD_FRAME)
+			last_cmd = 0;
+		}
+	    }
+
+	    if (last_cmd != 0)
+	    {
+		// Execute debug command: decide where to break next and
+		// return.
+		switch (last_cmd)
+		{
+		    case CMD_CONT:
+			debug_break_level = -1;
+			break;
+		    case CMD_NEXT:
+			debug_break_level = ex_nesting_level;
+			break;
+		    case CMD_STEP:
+			debug_break_level = 9999;
+			break;
+		    case CMD_FINISH:
+			debug_break_level = ex_nesting_level - 1;
+			break;
+		    case CMD_QUIT:
+			got_int = TRUE;
+			debug_break_level = -1;
+			break;
+		    case CMD_INTERRUPT:
+			got_int = TRUE;
+			debug_break_level = 9999;
+			// Do not repeat ">interrupt" cmd, continue stepping.
+			last_cmd = CMD_STEP;
+			break;
+		    case CMD_BACKTRACE:
+			do_showbacktrace(cmd);
+			continue;
+		    case CMD_FRAME:
+			if (*p == NUL)
+			{
+			    do_showbacktrace(cmd);
+			}
+			else
+			{
+			    p = skipwhite(p);
+			    do_setdebugtracelevel(p);
+			}
+			continue;
+		    case CMD_UP:
+			debug_backtrace_level++;
+			do_checkbacktracelevel();
+			continue;
+		    case CMD_DOWN:
+			debug_backtrace_level--;
+			do_checkbacktracelevel();
+			continue;
+		}
+		// Going out reset backtrace_level
+		debug_backtrace_level = 0;
+		break;
+	    }
+
+	    // don't debug this command
+	    n = debug_break_level;
+	    debug_break_level = -1;
+	    (void)do_cmdline(cmdline, getexline, NULL,
+						DOCMD_VERBOSE|DOCMD_EXCRESET);
+	    debug_break_level = n;
+	}
+	lines_left = Rows - 1;
+    }
+    vim_free(cmdline);
+
+    --RedrawingDisabled;
+    --no_wait_return;
+    redraw_all_later(UPD_NOT_VALID);
+    need_wait_return = FALSE;
+    msg_scroll = save_msg_scroll;
+    restore_timeout_for_debugging();
+    lines_left = Rows - 1;
+    State = save_State;
+    debug_mode = FALSE;
+    did_emsg = save_did_emsg;
+    cmd_silent = save_cmd_silent;
+    msg_silent = save_msg_silent;
+    emsg_silent = save_emsg_silent;
+    redir_off = save_redir_off;
+
+    // Only print the message again when typing a command before coming back
+    // here.
+    debug_did_msg = TRUE;
+}
+
+    static int
+get_maxbacktrace_level(char_u *sname)
+{
+    char	*p, *q;
+    int		maxbacktrace = 0;
+
+    if (sname == NULL)
+	return 0;
+
+    p = (char *)sname;
+    while ((q = strstr(p, "..")) != NULL)
+    {
+	p = q + 2;
+	maxbacktrace++;
+    }
+    return maxbacktrace;
+}
+
+    static void
+do_setdebugtracelevel(char_u *arg)
+{
+    int level;
+
+    level = atoi((char *)arg);
+    if (*arg == '+' || level < 0)
+	debug_backtrace_level += level;
+    else
+	debug_backtrace_level = level;
+
+    do_checkbacktracelevel();
+}
+
+    static void
+do_checkbacktracelevel(void)
+{
+    if (debug_backtrace_level < 0)
+    {
+	debug_backtrace_level = 0;
+	msg(_("frame is zero"));
+    }
+    else
+    {
+	char_u	*sname = estack_sfile(ESTACK_NONE);
+	int	max = get_maxbacktrace_level(sname);
+
+	if (debug_backtrace_level > max)
+	{
+	    debug_backtrace_level = max;
+	    smsg(_("frame at highest level: %d"), max);
+	}
+	vim_free(sname);
+    }
+}
+
+    static void
+do_showbacktrace(char_u *cmd)
+{
+    char_u  *sname;
+    char    *cur;
+    char    *next;
+    int	    i = 0;
+    int	    max;
+
+    sname = estack_sfile(ESTACK_NONE);
+    max = get_maxbacktrace_level(sname);
+    if (sname != NULL)
+    {
+	cur = (char *)sname;
+	while (!got_int)
+	{
+	    next = strstr(cur, "..");
+	    if (next != NULL)
+		*next = NUL;
+	    if (i == max - debug_backtrace_level)
+		smsg("->%d %s", max - i, cur);
+	    else
+		smsg("  %d %s", max - i, cur);
+	    ++i;
+	    if (next == NULL)
+		break;
+	    *next = '.';
+	    cur = next + 2;
+	}
+	vim_free(sname);
+    }
+
+    if (SOURCING_LNUM != 0)
+       smsg(_("line %ld: %s"), (long)SOURCING_LNUM, cmd);
+    else
+       smsg(_("cmd: %s"), cmd);
+}
+
+/*
+ * ":debug".
+ */
+    void
+ex_debug(exarg_T *eap)
+{
+    int		debug_break_level_save = debug_break_level;
+
+    debug_break_level = 9999;
+    do_cmdline_cmd(eap->arg);
+    debug_break_level = debug_break_level_save;
+}
+
+static char_u	*debug_breakpoint_name = NULL;
+static linenr_T	debug_breakpoint_lnum;
+
+/*
+ * When debugging or a breakpoint is set on a skipped command, no debug prompt
+ * is shown by do_one_cmd().  This situation is indicated by debug_skipped, and
+ * debug_skipped_name is then set to the source name in the breakpoint case.  If
+ * a skipped command decides itself that a debug prompt should be displayed, it
+ * can do so by calling dbg_check_skipped().
+ */
+static int	debug_skipped;
+static char_u	*debug_skipped_name;
+
+/*
+ * Go to debug mode when a breakpoint was encountered or "ex_nesting_level" is
+ * at or below the break level.  But only when the line is actually
+ * executed.  Return TRUE and set breakpoint_name for skipped commands that
+ * decide to execute something themselves.
+ * Called from do_one_cmd() before executing a command.
+ */
+    void
+dbg_check_breakpoint(exarg_T *eap)
+{
+    char_u	*p;
+
+    debug_skipped = FALSE;
+    if (debug_breakpoint_name != NULL)
+    {
+	if (!eap->skip)
+	{
+	    // replace K_SNR with "<SNR>"
+	    if (debug_breakpoint_name[0] == K_SPECIAL
+		    && debug_breakpoint_name[1] == KS_EXTRA
+		    && debug_breakpoint_name[2] == KE_SNR)
+		p = (char_u *)"<SNR>";
+	    else
+		p = (char_u *)"";
+	    smsg(_("Breakpoint in \"%s%s\" line %ld"),
+		    p,
+		    debug_breakpoint_name + (*p == NUL ? 0 : 3),
+		    (long)debug_breakpoint_lnum);
+	    debug_breakpoint_name = NULL;
+	    do_debug(eap->cmd);
+	}
+	else
+	{
+	    debug_skipped = TRUE;
+	    debug_skipped_name = debug_breakpoint_name;
+	    debug_breakpoint_name = NULL;
+	}
+    }
+    else if (ex_nesting_level <= debug_break_level)
+    {
+	if (!eap->skip)
+	    do_debug(eap->cmd);
+	else
+	{
+	    debug_skipped = TRUE;
+	    debug_skipped_name = NULL;
+	}
+    }
+}
+
+/*
+ * Go to debug mode if skipped by dbg_check_breakpoint() because eap->skip was
+ * set.  Return TRUE when the debug mode is entered this time.
+ */
+    int
+dbg_check_skipped(exarg_T *eap)
+{
+    int		prev_got_int;
+
+    if (!debug_skipped)
+	return FALSE;
+
+    // Save the value of got_int and reset it.  We don't want a previous
+    // interruption cause flushing the input buffer.
+    prev_got_int = got_int;
+    got_int = FALSE;
+    debug_breakpoint_name = debug_skipped_name;
+    // eap->skip is TRUE
+    eap->skip = FALSE;
+    (void)dbg_check_breakpoint(eap);
+    eap->skip = TRUE;
+    got_int |= prev_got_int;
+    return TRUE;
+}
+
+/*
+ * The list of breakpoints: dbg_breakp.
+ * This is a grow-array of structs.
+ */
+struct debuggy
+{
+    int		dbg_nr;		// breakpoint number
+    int		dbg_type;	// DBG_FUNC, DBG_FILE or DBG_EXPR
+    char_u	*dbg_name;	// function, expression or file name
+    regprog_T	*dbg_prog;	// regexp program
+    linenr_T	dbg_lnum;	// line number in function or file
+    int		dbg_forceit;	// ! used
+#ifdef FEAT_EVAL
+    typval_T    *dbg_val;       // last result of watchexpression
+#endif
+    int		dbg_level;      // stored nested level for expr
+};
+
+static garray_T dbg_breakp = {0, 0, sizeof(struct debuggy), 4, NULL};
+#define BREAKP(idx)		(((struct debuggy *)dbg_breakp.ga_data)[idx])
+#define DEBUGGY(gap, idx)	(((struct debuggy *)gap->ga_data)[idx])
+static int last_breakp = 0;	// nr of last defined breakpoint
+static int has_expr_breakpoint = FALSE;
+
+#ifdef FEAT_PROFILE
+// Profiling uses file and func names similar to breakpoints.
+static garray_T prof_ga = {0, 0, sizeof(struct debuggy), 4, NULL};
+#endif
+#define DBG_FUNC	1
+#define DBG_FILE	2
+#define DBG_EXPR	3
+
+static linenr_T debuggy_find(int file,char_u *fname, linenr_T after, garray_T *gap, int *fp);
+
+/*
+ * Evaluate the "bp->dbg_name" expression and return the result.
+ * Disables error messages.
+ */
+    static typval_T *
+eval_expr_no_emsg(struct debuggy *bp)
+{
+    typval_T	*tv;
+
+    // Disable error messages, a bad expression would make Vim unusable.
+    ++emsg_off;
+    tv = eval_expr(bp->dbg_name, NULL);
+    --emsg_off;
+
+    return tv;
+}
+
+/*
+ * Parse the arguments of ":profile", ":breakadd" or ":breakdel" and put them
+ * in the entry just after the last one in dbg_breakp.  Note that "dbg_name"
+ * is allocated.
+ * Returns FAIL for failure.
+ */
+    static int
+dbg_parsearg(
+    char_u	*arg,
+    garray_T	*gap)	    // either &dbg_breakp or &prof_ga
+{
+    char_u	*p = arg;
+    char_u	*q;
+    struct debuggy *bp;
+    int		here = FALSE;
+
+    if (ga_grow(gap, 1) == FAIL)
+	return FAIL;
+    bp = &DEBUGGY(gap, gap->ga_len);
+
+    // Find "func" or "file".
+    if (STRNCMP(p, "func", 4) == 0)
+	bp->dbg_type = DBG_FUNC;
+    else if (STRNCMP(p, "file", 4) == 0)
+	bp->dbg_type = DBG_FILE;
+    else if (
+#ifdef FEAT_PROFILE
+	    gap != &prof_ga &&
+#endif
+	    STRNCMP(p, "here", 4) == 0)
+    {
+	if (curbuf->b_ffname == NULL)
+	{
+	    emsg(_(e_no_file_name));
+	    return FAIL;
+	}
+	bp->dbg_type = DBG_FILE;
+	here = TRUE;
+    }
+    else if (
+#ifdef FEAT_PROFILE
+	    gap != &prof_ga &&
+#endif
+	    STRNCMP(p, "expr", 4) == 0)
+	bp->dbg_type = DBG_EXPR;
+    else
+    {
+	semsg(_(e_invalid_argument_str), p);
+	return FAIL;
+    }
+    p = skipwhite(p + 4);
+
+    // Find optional line number.
+    if (here)
+	bp->dbg_lnum = curwin->w_cursor.lnum;
+    else if (
+#ifdef FEAT_PROFILE
+	    gap != &prof_ga &&
+#endif
+	    VIM_ISDIGIT(*p))
+    {
+	bp->dbg_lnum = getdigits(&p);
+	p = skipwhite(p);
+    }
+    else
+	bp->dbg_lnum = 0;
+
+    // Find the function or file name.  Don't accept a function name with ().
+    if ((!here && *p == NUL)
+	    || (here && *p != NUL)
+	    || (bp->dbg_type == DBG_FUNC && strstr((char *)p, "()") != NULL))
+    {
+	semsg(_(e_invalid_argument_str), arg);
+	return FAIL;
+    }
+
+    if (bp->dbg_type == DBG_FUNC)
+	bp->dbg_name = vim_strsave(STRNCMP(p, "g:", 2) == 0 ? p + 2 : p);
+    else if (here)
+	bp->dbg_name = vim_strsave(curbuf->b_ffname);
+    else if (bp->dbg_type == DBG_EXPR)
+    {
+	bp->dbg_name = vim_strsave(p);
+	if (bp->dbg_name != NULL)
+	    bp->dbg_val = eval_expr_no_emsg(bp);
+    }
+    else
+    {
+	// Expand the file name in the same way as do_source().  This means
+	// doing it twice, so that $DIR/file gets expanded when $DIR is
+	// "~/dir".
+	q = expand_env_save(p);
+	if (q == NULL)
+	    return FAIL;
+	p = expand_env_save(q);
+	vim_free(q);
+	if (p == NULL)
+	    return FAIL;
+	if (*p != '*')
+	{
+	    bp->dbg_name = fix_fname(p);
+	    vim_free(p);
+	}
+	else
+	    bp->dbg_name = p;
+    }
+
+    if (bp->dbg_name == NULL)
+	return FAIL;
+    return OK;
+}
+
+/*
+ * ":breakadd".  Also used for ":profile".
+ */
+    void
+ex_breakadd(exarg_T *eap)
+{
+    struct debuggy *bp;
+    char_u	*pat;
+    garray_T	*gap;
+
+    gap = &dbg_breakp;
+#ifdef FEAT_PROFILE
+    if (eap->cmdidx == CMD_profile)
+	gap = &prof_ga;
+#endif
+
+    if (dbg_parsearg(eap->arg, gap) != OK)
+	return;
+
+    bp = &DEBUGGY(gap, gap->ga_len);
+    bp->dbg_forceit = eap->forceit;
+
+    if (bp->dbg_type != DBG_EXPR)
+    {
+	pat = file_pat_to_reg_pat(bp->dbg_name, NULL, NULL, FALSE);
+	if (pat != NULL)
+	{
+	    bp->dbg_prog = vim_regcomp(pat, RE_MAGIC + RE_STRING);
+	    vim_free(pat);
+	}
+	if (pat == NULL || bp->dbg_prog == NULL)
+	    vim_free(bp->dbg_name);
+	else
+	{
+	    if (bp->dbg_lnum == 0)	// default line number is 1
+		bp->dbg_lnum = 1;
+#ifdef FEAT_PROFILE
+	    if (eap->cmdidx != CMD_profile)
+#endif
+	    {
+		DEBUGGY(gap, gap->ga_len).dbg_nr = ++last_breakp;
+		++debug_tick;
+	    }
+	    ++gap->ga_len;
+	}
+    }
+    else
+    {
+	// DBG_EXPR
+	DEBUGGY(gap, gap->ga_len++).dbg_nr = ++last_breakp;
+	++debug_tick;
+	if (gap == &dbg_breakp)
+	    has_expr_breakpoint = TRUE;
+    }
+}
+
+/*
+ * ":debuggreedy".
+ */
+    void
+ex_debuggreedy(exarg_T *eap)
+{
+    if (eap->addr_count == 0 || eap->line2 != 0)
+	debug_greedy = TRUE;
+    else
+	debug_greedy = FALSE;
+}
+
+    static void
+update_has_expr_breakpoint(void)
+{
+    int i;
+
+    has_expr_breakpoint = FALSE;
+    for (i = 0; i < dbg_breakp.ga_len; ++i)
+	if (BREAKP(i).dbg_type == DBG_EXPR)
+	{
+	    has_expr_breakpoint = TRUE;
+	    break;
+	}
+}
+
+/*
+ * Return TRUE if there is any expression breakpoint.
+ */
+    int
+debug_has_expr_breakpoint(void)
+{
+    return has_expr_breakpoint;
+}
+
+/*
+ * ":breakdel" and ":profdel".
+ */
+    void
+ex_breakdel(exarg_T *eap)
+{
+    struct debuggy *bp, *bpi;
+    int		nr;
+    int		todel = -1;
+    int		del_all = FALSE;
+    int		i;
+    linenr_T	best_lnum = 0;
+    garray_T	*gap;
+
+    gap = &dbg_breakp;
+    if (eap->cmdidx == CMD_profdel)
+    {
+#ifdef FEAT_PROFILE
+	gap = &prof_ga;
+#else
+	ex_ni(eap);
+	return;
+#endif
+    }
+
+    if (vim_isdigit(*eap->arg))
+    {
+	// ":breakdel {nr}"
+	nr = atol((char *)eap->arg);
+	for (i = 0; i < gap->ga_len; ++i)
+	    if (DEBUGGY(gap, i).dbg_nr == nr)
+	    {
+		todel = i;
+		break;
+	    }
+    }
+    else if (*eap->arg == '*')
+    {
+	todel = 0;
+	del_all = TRUE;
+    }
+    else
+    {
+	// ":breakdel {func|file|expr} [lnum] {name}"
+	if (dbg_parsearg(eap->arg, gap) == FAIL)
+	    return;
+	bp = &DEBUGGY(gap, gap->ga_len);
+	for (i = 0; i < gap->ga_len; ++i)
+	{
+	    bpi = &DEBUGGY(gap, i);
+	    if (bp->dbg_type == bpi->dbg_type
+		    && STRCMP(bp->dbg_name, bpi->dbg_name) == 0
+		    && (bp->dbg_lnum == bpi->dbg_lnum
+			|| (bp->dbg_lnum == 0
+			    && (best_lnum == 0
+				|| bpi->dbg_lnum < best_lnum))))
+	    {
+		todel = i;
+		best_lnum = bpi->dbg_lnum;
+	    }
+	}
+	vim_free(bp->dbg_name);
+    }
+
+    if (todel < 0)
+    {
+	semsg(_(e_breakpoint_not_found_str), eap->arg);
+	return;
+    }
+
+    while (gap->ga_len > 0)
+    {
+	vim_free(DEBUGGY(gap, todel).dbg_name);
+#ifdef FEAT_EVAL
+	if (DEBUGGY(gap, todel).dbg_type == DBG_EXPR
+		&& DEBUGGY(gap, todel).dbg_val != NULL)
+	    free_tv(DEBUGGY(gap, todel).dbg_val);
+#endif
+	vim_regfree(DEBUGGY(gap, todel).dbg_prog);
+	--gap->ga_len;
+	if (todel < gap->ga_len)
+	    mch_memmove(&DEBUGGY(gap, todel), &DEBUGGY(gap, todel + 1),
+		    (gap->ga_len - todel) * sizeof(struct debuggy));
+#ifdef FEAT_PROFILE
+	if (eap->cmdidx == CMD_breakdel)
+#endif
+	    ++debug_tick;
+	if (!del_all)
+	    break;
+    }
+
+    // If all breakpoints were removed clear the array.
+    if (gap->ga_len == 0)
+	ga_clear(gap);
+    if (gap == &dbg_breakp)
+	update_has_expr_breakpoint();
+}
+
+/*
+ * ":breaklist".
+ */
+    void
+ex_breaklist(exarg_T *eap UNUSED)
+{
+    struct debuggy *bp;
+    int		i;
+
+    if (dbg_breakp.ga_len == 0)
+    {
+	msg(_("No breakpoints defined"));
+	return;
+    }
+
+    for (i = 0; i < dbg_breakp.ga_len; ++i)
+    {
+	bp = &BREAKP(i);
+	if (bp->dbg_type == DBG_FILE)
+	    home_replace(NULL, bp->dbg_name, NameBuff, MAXPATHL, TRUE);
+	if (bp->dbg_type != DBG_EXPR)
+	    smsg(_("%3d  %s %s  line %ld"),
+		    bp->dbg_nr,
+		    bp->dbg_type == DBG_FUNC ? "func" : "file",
+		    bp->dbg_type == DBG_FUNC ? bp->dbg_name : NameBuff,
+		    (long)bp->dbg_lnum);
+	else
+	    smsg(_("%3d  expr %s"),
+		    bp->dbg_nr, bp->dbg_name);
+    }
+}
+
+/*
+ * Find a breakpoint for a function or sourced file.
+ * Returns line number at which to break; zero when no matching breakpoint.
+ */
+    linenr_T
+dbg_find_breakpoint(
+    int		file,	    // TRUE for a file, FALSE for a function
+    char_u	*fname,	    // file or function name
+    linenr_T	after)	    // after this line number
+{
+    return debuggy_find(file, fname, after, &dbg_breakp, NULL);
+}
+
+#if defined(FEAT_PROFILE) || defined(PROTO)
+/*
+ * Return TRUE if profiling is on for a function or sourced file.
+ */
+    int
+has_profiling(
+    int		file,	    // TRUE for a file, FALSE for a function
+    char_u	*fname,	    // file or function name
+    int		*fp)	    // return: forceit
+{
+    return (debuggy_find(file, fname, (linenr_T)0, &prof_ga, fp)
+							      != (linenr_T)0);
+}
+#endif
+
+/*
+ * Common code for dbg_find_breakpoint() and has_profiling().
+ */
+    static linenr_T
+debuggy_find(
+    int		is_file,    // TRUE for a file, FALSE for a function
+    char_u	*fname,	    // file or function name
+    linenr_T	after,	    // after this line number
+    garray_T	*gap,	    // either &dbg_breakp or &prof_ga
+    int		*fp)	    // if not NULL: return forceit
+{
+    struct debuggy *bp;
+    int		i;
+    linenr_T	lnum = 0;
+    char_u	*name = NULL;
+    char_u	*short_name = fname;
+    int		prev_got_int;
+
+    // Return quickly when there are no breakpoints.
+    if (gap->ga_len == 0)
+	return (linenr_T)0;
+
+    // For a script-local function remove the prefix, so that
+    // "profile func Func" matches "Func" in any script.  Otherwise it's very
+    // difficult to profile/debug a script-local function.  It may match a
+    // function in the wrong script, but that is much better than not being
+    // able to profile/debug a function in a script with unknown ID.
+    // Also match a script-specific name.
+    if (!is_file && fname[0] == K_SPECIAL)
+    {
+	short_name = vim_strchr(fname, '_') + 1;
+	name = alloc(STRLEN(fname) + 3);
+	if (name != NULL)
+	{
+	    STRCPY(name, "<SNR>");
+	    STRCPY(name + 5, fname + 3);
+	}
+    }
+
+    for (i = 0; i < gap->ga_len; ++i)
+    {
+	// Skip entries that are not useful or are for a line that is beyond
+	// an already found breakpoint.
+	bp = &DEBUGGY(gap, i);
+	if (((bp->dbg_type == DBG_FILE) == is_file
+		    && bp->dbg_type != DBG_EXPR && (
+#ifdef FEAT_PROFILE
+		gap == &prof_ga ||
+#endif
+		(bp->dbg_lnum > after && (lnum == 0 || bp->dbg_lnum < lnum)))))
+	{
+	    // Save the value of got_int and reset it.  We don't want a
+	    // previous interruption cancel matching, only hitting CTRL-C
+	    // while matching should abort it.
+	    prev_got_int = got_int;
+	    got_int = FALSE;
+	    if ((name != NULL
+		   && vim_regexec_prog(&bp->dbg_prog, FALSE, name, (colnr_T)0))
+		    || vim_regexec_prog(&bp->dbg_prog, FALSE,
+						       short_name, (colnr_T)0))
+	    {
+		lnum = bp->dbg_lnum;
+		if (fp != NULL)
+		    *fp = bp->dbg_forceit;
+	    }
+	    got_int |= prev_got_int;
+	}
+#ifdef FEAT_EVAL
+	else if (bp->dbg_type == DBG_EXPR)
+	{
+	    typval_T *tv;
+	    int	      line = FALSE;
+
+	    tv = eval_expr_no_emsg(bp);
+	    if (tv != NULL)
+	    {
+		if (bp->dbg_val == NULL)
+		{
+		    debug_oldval = typval_tostring(NULL, TRUE);
+		    bp->dbg_val = tv;
+		    debug_newval = typval_tostring(bp->dbg_val, TRUE);
+		    line = TRUE;
+		}
+		else
+		{
+		    // Use "==" instead of "is" for strings, that is what we
+		    // always have done.
+		    exprtype_T	type = tv->v_type == VAR_STRING
+							? EXPR_EQUAL : EXPR_IS;
+
+		    if (typval_compare(tv, bp->dbg_val, type, FALSE) == OK
+			    && tv->vval.v_number == FALSE)
+		    {
+			typval_T *v;
+
+			line = TRUE;
+			debug_oldval = typval_tostring(bp->dbg_val, TRUE);
+			// Need to evaluate again, typval_compare() overwrites
+			// "tv".
+			v = eval_expr_no_emsg(bp);
+			debug_newval = typval_tostring(v, TRUE);
+			free_tv(bp->dbg_val);
+			bp->dbg_val = v;
+		    }
+		    free_tv(tv);
+		}
+	    }
+	    else if (bp->dbg_val != NULL)
+	    {
+		debug_oldval = typval_tostring(bp->dbg_val, TRUE);
+		debug_newval = typval_tostring(NULL, TRUE);
+		free_tv(bp->dbg_val);
+		bp->dbg_val = NULL;
+		line = TRUE;
+	    }
+
+	    if (line)
+	    {
+		lnum = after > 0 ? after : 1;
+		break;
+	    }
+	}
+#endif
+    }
+    if (name != fname)
+	vim_free(name);
+
+    return lnum;
+}
+
+/*
+ * Called when a breakpoint was encountered.
+ */
+    void
+dbg_breakpoint(char_u *name, linenr_T lnum)
+{
+    // We need to check if this line is actually executed in do_one_cmd()
+    debug_breakpoint_name = name;
+    debug_breakpoint_lnum = lnum;
+}
+#endif