[elpa] master 90dfb29 1/6: Move ipdb out of realgud core

[Rocky Bernstein]

branch: master
commit 90dfb296bfa120e9c037a69b61c6d2dbe68595eb
Author: rocky <address@hidden>
Commit: rocky <address@hidden>

    Move ipdb out of realgud core
---
 .gitignore                |  25 +++++
 Makefile.am               |  49 +++++++++
 README.md                 |   1 +
 autogen.sh                |  12 +++
 common.mk.in              |  24 +++++
 configure.ac              |  55 ++++++++++
 ipdb/Makefile.am          |   5 +
 ipdb/core.el              | 249 ++++++++++++++++++++++++++++++++++++++++++++++
 ipdb/init.el              | 161 ++++++++++++++++++++++++++++++
 ipdb/ipdb.el              | 125 +++++++++++++++++++++++
 ipdb/track-mode.el        |  74 ++++++++++++++
 realgud-ipdb.el           |  45 +++++++++
 test/Makefile.am          |  73 ++++++++++++++
 test/make-check-filter.rb |  24 +++++
 test/regexp-helper.el     |  61 ++++++++++++
 test/test-ipdb.el         |  40 ++++++++
 test/test-regexp-ipdb.el  | 108 ++++++++++++++++++++
 17 files changed, 1131 insertions(+)

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..98b94eb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,25 @@
+*.elc
+*~
+/*-pkg.el
+/*.tar.gz
+/.byebug_history
+/.python-version
+/.ruby-version
+/README
+/aclocal.m4
+/autom4te.cache
+/common.mk
+/config.log
+/config.status
+/configure
+/configure.lineno
+/elpa
+/install-sh
+/missing
+/test/npm-debug.log
+/tmp
+Makefile
+Makefile.in
+elc-stamp
+elc-temp
+script
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..e950187
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,49 @@
+# Note: This makefile include remake-style target comments.
+# These comments before the targets start with #:
+# remake --tasks to shows the targets and the comments
+
+SUBDIRS = ipdb test
+
+GIT2CL ?= git2cl
+RUBY   ?= ruby
+
+lispdir = @lispdir@
+
+lisp_files = $(wildcard *.el)
+lisp_LISP = $(lisp_files)
+include common.mk
+
+PHONY=check clean dist distclean test check-short check-terse install-short
+
+EXTRA_DIST = common.mk.in INSTALL.md README.md THANKS $(lisp_files)
+
+if MAINTAINER_MODE
+
+#: Remove change log: ChangeLog
+rmChangeLog:
+       rm ChangeLog || true
+
+#: Create a ChangeLog file from git logs
+ChangeLog: rmChangeLog
+       git log --pretty --numstat --summary | $(GIT2CL) > $@
+
+ACLOCAL_AMFLAGS=-I .
+
+endif
+
+#: Run all tests
+test: check
+
+#: Run all tests without bloated output
+check-short:
+       $(MAKE) check 2>&1  | $(RUBY) test/make-check-filter.rb
+
+#: Run all tests without and show just the failure lines
+check-terse:
+       $(MAKE) check 2>&1  | $(RUBY) tes/make-check-filter.rb | grep failure
+
+#: Run "make install" non-verbosely
+install-short:
+       $(MAKE) install 2>&1  | $(RUBY) test/make-check-filter.rb
+
+.PHONY: test check check-short rmChangeLog
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..576a8f3
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+Emacs Lisp Module to add [ipdb](https://pypi.org/project/ipdb/) support to 
[realgud](http://github.com/rocky/emacs-dbgr).
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..7beb4b9
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+# An autoconf setup script.
+# From inside emacs, make sure test-simple is installed and then
+# Press C-x C-e at the end of the next line run this script
+# (test-simple-run "EMACSLOADPATH=%s ./autogen.sh"  (mapconcat 'identity 
load-path ":"))
+ln -fs README.md README
+touch common.mk
+autoreconf -vfi && \
+autoconf && {
+  echo "Running configure with --enable-maintainer-mode $@"
+  ./configure --enable-maintainer-mode $@
+}
diff --git a/common.mk.in b/common.mk.in
new file mode 100644
index 0000000..88f3a9d
--- /dev/null
+++ b/common.mk.in
@@ -0,0 +1,24 @@
+MOSTLYCLEANFILES = *.elc
address@hidden@
+
+short:
+       $(MAKE) 2>&1 >/dev/null | ruby $(top_srcdir)/make-check-filter.rb
+
+%.short:
+       $(MAKE) $(@:.short=) 2>&1 >/dev/null
+
+# This is the default target but We need to include an EMACSLOADPATH
+.el.elc:
+       if test "$(EMACS)" != "no"; then \
+         am__dir=. am__subdir_includes=''; \
+         case $@ in */*) \
+           am__dir=`echo '$@' | sed 's,/[^/]*$$,,'`; \
+           am__subdir_includes="-L $$am__dir -L $(srcdir)/$$am__dir"; \
+         esac; \
+         test -d "$$am__dir" || $(MKDIR_P) "$$am__dir" || exit 1; \
+         EMACSLOADPATH=$(EMACSLOADPATH) $(EMACS) --batch \
+           $(AM_ELCFLAGS) --eval "(progn(package-initialize))" \
+           $$am__subdir_includes -L $(builddir) -L $(srcdir) \
+           --eval "(defun byte-compile-dest-file (f) \"address@hidden")" \
+           --eval "(unless (byte-compile-file \"$<\") (kill-emacs 1))"; \
+       else :; fi
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..000c4e9
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,55 @@
+dnl FIXME: pick up from realgud.el
+AC_INIT(realgud-ipdb, 1.0.0,)
+AC_CONFIG_SRCDIR(ipdb/ipdb.el)
+AM_INIT_AUTOMAKE([foreign])
+AM_MAINTAINER_MODE
+
+AC_PATH_PROG([EMACS], [emacs], [emacs])
+AC_ARG_WITH(emacs, AC_HELP_STRING([--with-emacs],
+                  [location of emacs program]), EMACS=$withval)
+
+AC_MSG_NOTICE("Checking emacs version")
+$EMACS -batch -q --no-site-file -eval \
+  '(if (<= emacs-major-version 23)
+       (progn
+         (error "You need GNU Emacs 24 or better.")
+         (kill-emacs 1)
+       )
+   )'
+if test $? -ne 0 ; then
+    AC_MSG_ERROR([Can't continue until above error is corrected.])
+fi
+
+##################################################################
+# See if --with-lispdir was set. If not, set it to a reasonable default
+# based on where bash thinks bashdb is supposed to be installed.
+##################################################################
+
+AM_MISSING_PROG(GIT2CL, git2cl, $missing_dir)
+
+# Check whether --with-lispdir was given.
+if test "${with_lispdir+set}" = set; then :
+else
+  my_lispdir=$(EMACS_PROG=$EMACS $SH_PROG $(dirname $0)/compute-lispdir.sh)
+  if test "${my_lispdir+set}" = set; then :
+    with_lispdir=$my_lispdir
+    echo "'compute-lispdir.sh' lispdir install directory override: 
'$with_lispdir'"
+  fi
+fi
+
+##
+## Find out where to install the debugger emacs lisp files
+##
+AM_PATH_LISPDIR
+lispdir_realgud=$lispdir/realgud
+AC_SUBST([lispdir])
+AC_SUBST([lispdir_realgud])
+
+AM_CONDITIONAL(INSTALL_EMACS_LISP, test "x$lispdir_realgud" != "x")
+
+AC_CONFIG_FILES([Makefile \
+                 common.mk \
+                ipdb/Makefile \
+                test/Makefile \
+                ])
+AC_OUTPUT
diff --git a/ipdb/Makefile.am b/ipdb/Makefile.am
new file mode 100644
index 0000000..e8453c0
--- /dev/null
+++ b/ipdb/Makefile.am
@@ -0,0 +1,5 @@
+lisp_files = $(wildcard *.el)
+EXTRA_DIST=$(lisp_files)
+lisp_LISP = $(lisp_files)
+include ../common.mk
+lispdir = @lispdir@/lldb
diff --git a/ipdb/core.el b/ipdb/core.el
new file mode 100644
index 0000000..c505ebc
--- /dev/null
+++ b/ipdb/core.el
@@ -0,0 +1,249 @@
+;; Copyright (C) 2016-2017, 2019 Free Software Foundation, Inc
+
+;; Author: Sean Farley <address@hidden>, Rocky Bernstein (address@hidden)
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.or/licenses/>.
+
+
+(require 'comint)
+(require 'realgud)
+
+(declare-function realgud-lang-mode? 'realgud-lang)
+(declare-function realgud-parse-command-arg 'realgud-core)
+(declare-function realgud-query-cmdline 'realgud-core)
+(declare-function realgud-suggest-invocation 'realgud-core)
+(declare-function realgud-get-cmdbuf   'realgud-buffer-helper)
+
+;; FIXME: I think the following could be generalized and moved to
+;; realgud-... probably via a macro.
+(defvar realgud:ipdb-minibuffer-history nil
+  "minibuffer history list for the command `ipdb'.")
+
+(defvar realgud:ipdb-remote-minibuffer-history nil
+  "minibuffer history list for the command `ipdb-remote'.")
+
+(easy-mmode-defmap ipdb-minibuffer-local-map
+  '(("\C-i" . comint-dynamic-complete-filename))
+  "Keymap for minibuffer prompting of debugger startup command."
+  :inherit minibuffer-local-map)
+
+;; FIXME: I think this code and the keymaps and history
+;; variable chould be generalized, perhaps via a macro.
+(defun ipdb-query-cmdline (&optional opt-debugger)
+  (realgud-query-cmdline
+   'ipdb-suggest-invocation
+   ipdb-minibuffer-local-map
+   'realgud:ipdb-minibuffer-history
+   opt-debugger))
+
+;; FIXME: I think this code and the keymaps and history
+;; variable chould be generalized, perhaps via a macro.
+(defun ipdb-remote-query-cmdline ()
+  (realgud-query-cmdline
+   'ipdb-suggest-invocation
+   ipdb-minibuffer-local-map
+   'realgud:ipdb-remote-minibuffer-history
+   "telnet"))
+
+(defun ipdb-parse-cmd-args (orig-args)
+  "Parse command line ORIG-ARGS for the annotate level and name of script to 
debug.
+
+ORIG-ARGS should contain a tokenized list of the command line to run.
+
+We return the a list containing:
+* the command processor (e.g. python) and it's arguments if any - a list of 
strings
+* the name of the debugger given (e.g. ipdb) and its arguments - a list of 
strings
+* the script name and its arguments - list of strings
+* whether the annotate or emacs option was given ('-A', '--annotate' or 
'--emacs) - a boolean
+
+For example for the following input:
+  (map 'list 'symbol-name
+   '(python2.6 -O -Qold ./gcd.py a b))
+
+we might return:
+   ((\"python2.6\" \"-O\" \"-Qold\") (\"ipdb\") (\"/tmp/gcd.py\" \"a\" \"b\") 
nil)
+
+Note that the script name path has been expanded via `expand-file-name'.
+"
+
+  ;; Parse the following kind of pattern:
+  ;;  [python python-options] ipdb ipdb-options script-name script-options
+  (let (
+       (args orig-args)
+       (pair)          ;; temp return from
+       (python-opt-two-args '())
+       ;; Python doesn't have mandatory 2-arg options in our sense,
+       ;; since the two args can be run together, e.g. "-C/tmp" or "-C /tmp"
+       ;;
+       (python-two-args '())
+       ;; ipdb doesn't have any arguments
+       (ipdb-two-args '())
+       (ipdb-opt-two-args '())
+       (interp-regexp
+        (if (member system-type (list 'windows-nt 'cygwin 'msdos))
+            "^python[-0-9.]*\\(.exe\\)?$"
+          "^python[-0-9.]*$"))
+
+       ;; Things returned
+       (annotate-p nil)
+       (debugger-args '())
+       (debugger-name nil)
+       (interpreter-args '())
+       (script-args '())
+       (script-name nil)
+       )
+
+    (if (not (and args))
+       ;; Got nothing: return '(nil, nil)
+       (list interpreter-args debugger-args script-args annotate-p)
+      ;; else
+      ;; Strip off optional "python" or "python182" etc.
+      (when (string-match interp-regexp
+                         (file-name-sans-extension
+                          (file-name-nondirectory (car args))))
+       (setq interpreter-args (list (pop args)))
+
+       ;; Strip off Python-specific options
+       (while (and args
+                   (string-match "^-" (car args)))
+         (setq pair (realgud-parse-command-arg
+                     args python-two-args python-opt-two-args))
+         (nconc interpreter-args (car pair))
+         (setq args (cadr pair))))
+
+      ;; Remove "ipdb" from "ipdb --ipdb-options script
+      ;; --script-options"
+      (setq debugger-name (file-name-sans-extension
+                          (file-name-nondirectory (car args))))
+      (unless (string-match "^\\(ipdb\\|cli.py\\)$" debugger-name)
+       (message
+        "Expecting debugger name `%s' to be `ipdb' or `cli.py'"
+        debugger-name))
+      (setq debugger-args (list (pop args)))
+
+      ;; Skip to the first non-option argument.
+      (while (and args (not script-name))
+       (let ((arg (car args)))
+         (cond
+          ;; Options with arguments.
+          ((string-match "^-" arg)
+           (setq pair (realgud-parse-command-arg
+                       args ipdb-two-args ipdb-opt-two-args))
+           (nconc debugger-args (car pair))
+           (setq args (cadr pair)))
+          ;; Anything else must be the script to debug.
+          (t (setq script-name (expand-file-name arg))
+             (setq script-args (cons script-name (cdr args))))
+          )))
+      (list interpreter-args debugger-args script-args annotate-p))))
+
+(defun ipdb-parse-remote-cmd-args (orig-args)
+    "Parse command line ORIG-ARGS
+ORIG-ARGS should contain a tokenized list of the command line to run.
+
+We return the a list containing:
+* the command processor (e.g. python) and it's arguments if any - a list of 
strings
+* the name of the debugger given (e.g. ipdb) and its arguments - a list of 
strings
+* the script name and its arguments - list of strings
+* nil
+
+For example for the following input:
+  (map 'list 'symbol-name
+   '(telnet localhost 6900))
+
+we might return:
+   ((\"telnet\" \"localhost\" \"6900\") nil nil nil)
+
+Note that the script name path has been expanded via `expand-file-name'.
+"
+    (list orig-args '("ipdb") nil nil nil)
+  )
+
+  ;; To silence Warning: reference to free variable
+(defvar realgud:ipdb-command-name)
+
+(defun ipdb-remote-suggest-invocation (debugger-name)
+  "Suggest an ipdb command invocation via `realgud-suggest-invocaton'"
+  "telnet 127.0.0.1 4000")
+
+(defun ipdb-suggest-invocation (debugger-name)
+  "Suggest a ipdb command invocation via `realgud-suggest-invocaton'"
+  (realgud-suggest-invocation (or debugger-name realgud:ipdb-command-name)
+                             realgud:ipdb-minibuffer-history
+                             "python" "\\.py"))
+
+(defun ipdb-reset ()
+  "Ipdb cleanup - remove debugger's internal buffers (frame,
+breakpoints, etc.)."
+  (interactive)
+  ;; (ipdb-breakpoint-remove-all-icons)
+  (dolist (buffer (buffer-list))
+    (when (string-match "\\*ipdb-[a-z]+\\*" (buffer-name buffer))
+      (let ((w (get-buffer-window buffer)))
+        (when w
+          (delete-window w)))
+      (kill-buffer buffer))))
+
+;; (defun ipdb-reset-keymaps()
+;;   "This unbinds the special debugger keys of the source buffers."
+;;   (interactive)
+;;   (setcdr (assq 'ipdb-debugger-support-minor-mode minor-mode-map-alist)
+;;       ipdb-debugger-support-minor-mode-map-when-deactive))
+
+(defconst realgud:ipdb-complete-script
+  (concat
+   "from IPython import get_ipython;"
+   "comp = '''%s''';"
+   "prefix, candidates = get_ipython().Completer.complete(line_buffer = comp);"
+   "print(';'.join([prefix] + candidates))"))
+
+(defun realgud:ipdb-backend-complete ()
+  "Send a command to the ipdb buffer and parse the output.
+
+The idea here is to rely on the
+`comint-redirect-send-command-to-process' function to send a
+python command `realgud:ipdb-complete-script' that will return
+the completions for the given input."
+  (interactive)
+  (let ((buffer (current-buffer))
+        (cmdbuf (realgud-get-cmdbuf))
+        (process (get-buffer-process (current-buffer)))
+        (start-pos (save-excursion (comint-goto-process-mark) (point)))
+        (end-pos (point)))
+
+    ;; get the input string
+    (when (> end-pos start-pos)
+      (let* ((input-str (buffer-substring-no-properties start-pos end-pos))
+             (command-str (format realgud:ipdb-complete-script input-str))
+             (output-str (with-temp-buffer
+                           (comint-redirect-send-command-to-process
+                            command-str (current-buffer) process nil t)
+                           ;; Wait for the process to complete
+                           (with-current-buffer (process-buffer process)
+                             (while (null comint-redirect-completed)
+                               (accept-process-output nil 0 5))) ;; wait 5ms
+                           (buffer-substring (point-min) (1- (point-max)))))
+             (output-values (split-string output-str ";"))
+             (prefix (car output-values)))
+        (list (- end-pos (length prefix)) end-pos (cdr output-values))))))
+
+(defun realgud:ipdb-completion-at-point ()
+  (let ((ipdb (realgud:ipdb-backend-complete)))
+    (when ipdb
+      (list (nth 0 ipdb)
+            (nth 1 ipdb)
+            (nth 2 ipdb)
+            :exclusive 'yes))))
+
+(defun realgud:ipdb-customize ()
+  "Use `customize' to edit the settings of the `ipdb' debugger."
+  (interactive)
+  (customize-group 'realgud:ipdb))
+
+(provide-me "realgud:ipdb-")
diff --git a/ipdb/init.el b/ipdb/init.el
new file mode 100644
index 0000000..3a0ac80
--- /dev/null
+++ b/ipdb/init.el
@@ -0,0 +1,161 @@
+;; Copyright (C) 2016, 2018-2019 Free Software Foundation, Inc
+
+;; Author: Rocky Bernstein <address@hidden>
+;; Author: Sean Farley <address@hidden>
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+;; ipdb: "interactive" debugger extension to Python debugger pdb
+
+(eval-when-compile (require 'cl-lib))   ;For setf.
+
+(require 'realgud)
+
+(defvar realgud-pat-hash)
+(declare-function make-realgud-loc-pat (realgud-loc))
+
+(defvar realgud:ipdb-pat-hash (make-hash-table :test 'equal)
+  "Hash key is the what kind of pattern we want to match:
+backtrace, prompt, etc.  The values of a hash entry is a
+realgud-loc-pat struct")
+
+(declare-function make-realgud-loc "realgud-loc" (a b c d e f))
+
+;; -------------------------------------------------------------------
+;; User-definable variables
+;;
+
+;; realgud-loc-pat that describes a ipdb location generally shown
+;; before a command prompt.
+;;
+;; Program-location lines look like this:
+;;   > /usr/bin/zonetab2pot.py(15)<module>()
+;; or MS Windows:
+;;   > c:\\mydirectory\\gcd.py(10)<module>
+(setf (gethash "loc" realgud:ipdb-pat-hash)
+      (make-realgud-loc-pat
+       :regexp "^> \\(\\(?:[a-zA-Z]:\\)?[-a-zA-Z0-9_/.\\\\ ]+\\)(\\([0-9]+\\))"
+       :file-group 1
+       :line-group 2))
+
+;; An initial list of regexps that don't generally have files
+;; associated with them and therefore we should not try to find file
+;; associations for them.  This list is used to seed a field of the
+;; same name in the cmd-info structure inside a command buffer. A user
+;; may add additional files to the command-buffer's re-ignore-list.
+(setf (gethash "ignore-re-file-list" realgud:ipdb-pat-hash)
+      (list realgud-python-ignore-file-re))
+
+(setf (gethash "prompt" realgud:ipdb-pat-hash)
+      (make-realgud-loc-pat
+       :regexp   "^ipdb[>] "
+       ))
+
+;;  realgud-loc-pat that describes a Python backtrace line.
+(setf (gethash "lang-backtrace" realgud:ipdb-pat-hash)
+      realgud-python-backtrace-loc-pat)
+
+(setf (gethash "debugger-backtrace" realgud:ipdb-pat-hash)
+      realgud:python-trepan-backtrace-pat)
+
+;;  realgud-loc-pat that describes a line a Python "info break" line.
+;; For example:
+;; 1   breakpoint    keep y   at /usr/local/bin/trepan3k:7
+(setf (gethash "debugger-breakpoint" realgud:ipdb-pat-hash)
+  (make-realgud-loc-pat
+   :regexp (format "^%s[ \t]+\\(breakpoint\\)[ \t]+\\(keep\\|del\\)[ 
\t]+\\(yes\\|no\\)[ \t]+.*at \\(.+\\):%s"
+                  realgud:regexp-captured-num realgud:regexp-captured-num)
+   :num 1
+   :text-group 2  ;; misnamed Is "breakpoint" or "watchpoint"
+   :string 3      ;; misnamed. Is "keep" or "del"
+   :file-group 5
+   :line-group 6))
+
+;;  realgud-loc-pat that describes location in a pytest error
+(setf (gethash "pytest-error" realgud:ipdb-pat-hash)
+      realgud-pytest-error-loc-pat)
+
+;;  realgud-loc-pat that describes location in a flake8 message
+(setf (gethash "flake8-msg" realgud:ipdb-pat-hash)
+      realgud-flake8-msg-loc-pat)
+
+;;  realgud-loc-pat that describes a "breakpoint set" line. For example:
+;;     Breakpoint 1 at /usr/bin/ipdb:7
+(setf (gethash "brkpt-set" realgud:ipdb-pat-hash)
+      (make-realgud-loc-pat
+       :regexp "^Breakpoint \\([0-9]+\\) at[ 
\t\n]+\\(.+\\):\\([0-9]+\\)\\(\n\\|$\\)"
+       :num 1
+       :file-group 2
+       :line-group 3))
+
+;; realgud-loc-pat that describes a "delete breakpoint" line
+;; Python 3 includes a file name and line number; Python 2 doesn't
+(setf (gethash "brkpt-del" realgud:ipdb-pat-hash)
+      (make-realgud-loc-pat
+       :regexp "^Deleted breakpoint \\([0-9]+\\)"
+       :num 1))
+
+(setf (gethash "font-lock-keywords" realgud:ipdb-pat-hash)
+      '(
+       ;; The frame number and first type name, if present.
+       ("^\\(->\\|##\\)\\([0-9]+\\) \\(<module>\\)? 
*\\([a-zA-Z_][a-zA-Z0-9_]*\\)(\\(.+\\))?"
+        (2 realgud-backtrace-number-face)
+        (4 font-lock-function-name-face nil t))     ; t means optional.
+
+       ;; Parameter sequence, E.g. gcd(a=3, b=5)
+       ;;                             ^^^^^^^^^
+       ("(\\(.+\\))"
+        (1 font-lock-variable-name-face))
+
+       ;; File name. E.g  file '/test/gcd.py'
+       ;;                 ------^^^^^^^^^^^^-
+       ("[ \t]+file '\\([^ ]+*\\)'"
+        (1 realgud-file-name-face))
+
+       ;; Line number. E.g. at line 28
+        ;;                  ---------^^
+       ("[ \t]+at line \\([0-9]+\\)$"
+        (1 realgud-line-number-face))
+
+       ;; Function name.
+       ("\\<\\([a-zA-Z_][a-zA-Z0-9_]*\\)\\.\\([a-zA-Z_][a-zA-Z0-9_]*\\)"
+        (1 font-lock-type-face)
+        (2 font-lock-function-name-face))
+       ;; (ipdb-frames-match-current-line
+       ;;  (0 ipdb-frames-current-frame-face append))
+       ))
+
+(setf (gethash "ipdb" realgud-pat-hash) realgud:ipdb-pat-hash)
+
+(defvar realgud:ipdb-command-hash (make-hash-table :test 'equal)
+  "Hash key is command name like 'finish' and the value is
+the ipdb command to use, like 'return'")
+
+;; Mappings between ipdb-specific names and GUD names
+(setf (gethash "finish"           realgud:ipdb-command-hash) "return")
+(setf (gethash "kill"             realgud:ipdb-command-hash) "quit")
+(setf (gethash "backtrace"        realgud:ipdb-command-hash) "where")
+;; Clear in Python does both the usual “delete” and “clear”
+(setf (gethash "delete"           realgud:ipdb-command-hash) "clear %p")
+(setf (gethash "clear"            realgud:ipdb-command-hash) "clear %X:%l")
+;; Use ‘!’ instead of ‘p’, since ‘p’ only works for expressions, not statements
+(setf (gethash "eval"             realgud:ipdb-command-hash) "pp %s")
+(setf (gethash "info-breakpoints" realgud:ipdb-command-hash) "break")
+
+;; Unsupported features:
+(setf (gethash "shell" realgud:ipdb-command-hash) "*not-implemented*")
+(setf (gethash "frame" realgud:ipdb-command-hash) "*not-implemented*")
+
+(setf (gethash "ipdb" realgud-command-hash) realgud:ipdb-command-hash)
+
+(provide-me "realgud:ipdb-")
diff --git a/ipdb/ipdb.el b/ipdb/ipdb.el
new file mode 100644
index 0000000..a17a041
--- /dev/null
+++ b/ipdb/ipdb.el
@@ -0,0 +1,125 @@
+;; Copyright (C) 2016, 2019 Free Software Foundation, Inc
+
+;; Author: Rocky Bernstein <address@hidden>
+;; Author: Sean Farley <address@hidden>
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;  `ipdb' Main interface to ipdb via Emacs
+(require 'load-relative)
+(require-relative-list '("core" "track-mode") "realgud:ipdb-")
+(require-relative-list '("../../common/run")  "realgud:")
+(require-relative-list '("core" "track-mode") "realgud:ipdb-")
+
+;; This is needed, or at least the docstring part of it is needed to
+;; get the customization menu to work in Emacs 24.
+(defgroup realgud:ipdb nil
+  "The realgud interface to the Python ipdb debugger"
+  :group 'realgud
+  :version "24.3")
+
+(declare-function make-realgud-loc "realgud-loc" (a b c d e f))
+
+;; -------------------------------------------------------------------
+;; User-definable variables
+;;
+
+(defcustom realgud:ipdb-command-name
+  "ipdb"
+  "File name for executing the stock Python debugger and command options.
+This should be an executable on your path, or an absolute file name."
+  :type 'string
+  :group 'realgud:ipdb)
+;; -------------------------------------------------------------------
+;; The end.
+;;
+
+(declare-function ipdb-track-mode       'realgud:ipdb-track)
+(declare-function ipdb-query-cmdline    'realgud:ipdb-core)
+(declare-function ipdb-parse-cmd-args   'realgud:ipdb-core)
+(declare-function realgud:ipdb-completion-at-point 'realgud:ipdb-core)
+(declare-function realgud:run-debugger 'realgud:run)
+
+;;;###autoload
+(defun realgud:ipdb (&optional opt-cmd-line no-reset)
+  "Invoke the ipdb Python debugger and start the Emacs user interface.
+
+String OPT-CMD-LINE specifies how to run ipdb. You will be prompted
+for a command line is one isn't supplied.
+
+OPT-COMMAND-LINE is treated like a shell string; arguments are
+tokenized by `split-string-and-unquote'. The tokenized string is
+parsed by `ipdb-parse-cmd-args' and path elements found by that
+are expanded using `realgud:expand-file-name-if-exists'.
+
+Normally, command buffers are reused when the same debugger is
+reinvoked inside a command buffer with a similar command. If we
+discover that the buffer has prior command-buffer information and
+NO-RESET is nil, then that information which may point into other
+buffers and source buffers which may contain marks and fringe or
+marginal icons is reset. See `loc-changes-clear-buffer' to clear
+fringe and marginal icons.
+"
+  (interactive)
+  (let ((cmd-buf (realgud:run-debugger "ipdb" 'ipdb-query-cmdline
+                                       'ipdb-parse-cmd-args
+                                       'realgud:ipdb-minibuffer-history
+                                       opt-cmd-line no-reset))
+        )
+    (add-hook 'completion-at-point-functions
+              'realgud:ipdb-completion-at-point nil t)
+    (with-current-buffer cmd-buf
+      (add-hook 'completion-at-point-functions
+               'realgud:ipdb-completion-at-point nil t)
+      )
+    cmd-buf)
+  )
+
+
+;;;###autoload
+(defun realgud:ipdb-remote (&optional opt-cmd-line no-reset)
+  "Invoke the ipdb Python debugger and start the Emacs user interface.
+
+String OPT-CMD-LINE specifies how to run ipdb. You will be prompted
+for a command line is one isn't supplied.
+
+OPT-COMMAND-LINE is treated like a shell string; arguments are
+tokenized by `split-string-and-unquote'. The tokenized string is
+parsed by `ipdb-parse-remote-cmd-args' and path elements found by that
+are expanded using `realgud:expand-file-name-if-exists'.
+
+Normally, command buffers are reused when the same debugger is
+reinvoked inside a command buffer with a similar command. If we
+discover that the buffer has prior command-buffer information and
+NO-RESET is nil, then that information which may point into other
+buffers and source buffers which may contain marks and fringe or
+marginal icons is reset. See `loc-changes-clear-buffer' to clear
+fringe and marginal icons.
+"
+  (interactive)
+  (let ((cmd-buf (realgud:run-debugger "ipdb" 'ipdb-remote-query-cmdline
+                                       'ipdb-parse-remote-cmd-args
+                                       'realgud:ipdb-remote-minibuffer-history
+                                       opt-cmd-line no-reset "remote-ipdb"))
+        )
+    (add-hook 'completion-at-point-functions
+              'realgud:ipdb-completion-at-point nil t)
+    cmd-buf)
+  )
+
+
+;;;###autoload
+(defalias 'ipdb 'realgud:ipdb)
+
+(provide-me "realgud-")
diff --git a/ipdb/track-mode.el b/ipdb/track-mode.el
new file mode 100644
index 0000000..c6415e6
--- /dev/null
+++ b/ipdb/track-mode.el
@@ -0,0 +1,74 @@
+;; Copyright (C) 2016, 2018, 2019 Free Software Foundation, Inc
+
+;; Author: Rocky Bernstein <address@hidden>
+;; Author: Sean Farley <address@hidden>
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+;; Python "ipdb" Debugger tracking a comint buffer.
+
+(eval-when-compile (require 'cl))
+
+(require 'realgud)
+
+(require-relative-list '("core" "init") "realgud:ipdb-")
+
+(realgud-track-mode-vars "ipdb")
+
+(declare-function realgud-track-mode 'realgud-track-mode)
+(declare-function realgud-track-mode-setup 'realgud-track-mode)
+(declare-function realgud:track-set-debugger 'realgud-track-mode)
+(declare-function realgud-python-populate-command-keys 'realgud-lang-python)
+(declare-function realgud:ipdb-completion-at-point 'realgud:ipdb-core)
+
+(realgud-python-populate-command-keys ipdb-track-mode-map)
+
+(defun ipdb-track-mode-hook()
+  (if ipdb-track-mode
+      (progn
+        (use-local-map ipdb-track-mode-map)
+       (realgud:remove-ansi-schmutz)
+        (add-hook 'completion-at-point-functions
+                  'realgud:ipdb-completion-at-point nil t)
+        (message "using ipdb mode map")
+        )
+    (message "ipdb track-mode-hook disable called")
+    )
+)
+
+(define-minor-mode ipdb-track-mode
+  "Minor mode for tracking ipdb source locations inside a process shell via 
realgud. ipdb is a Python debugger based on ipython.
+
+If called interactively with no prefix argument, the mode is toggled. A prefix 
argument, captured as ARG, enables the mode if the argument is positive, and 
disables it otherwise.
+
+a process shell.
+
+\\{ipdb-track-mode-map}
+"
+  :init-value nil
+  ;; :lighter " ipdb"   ;; mode-line indicator from realgud-track is 
sufficient.
+  ;; The minor mode bindings.
+  :global nil
+  :group 'realgud:ipdb
+  :keymap ipdb-track-mode-map
+  (realgud:track-set-debugger "ipdb")
+  (if ipdb-track-mode
+      (progn
+       (realgud-track-mode-setup 't)
+        (ipdb-track-mode-hook))
+    (progn
+      (setq realgud-track-mode nil)
+      ))
+)
+
+(provide-me "realgud:ipdb-")
diff --git a/realgud-ipdb.el b/realgud-ipdb.el
new file mode 100644
index 0000000..ad58c7d
--- /dev/null
+++ b/realgud-ipdb.el
@@ -0,0 +1,45 @@
+;;; realgud-ipdb.el --- realgud front-end to ipdb
+
+;; Author: Rocky Bernstein
+;; Version: 1.0
+;; Package-Requires: ((realgud "1.4.5") (emacs "24"))
+;; URL: http://github.com/rocky/realgud-ipdb
+;; Compatibility: GNU Emacs 24.x
+
+;; Copyright (C) 2019 Free Software Foundation, Inc
+
+;; Author: Rocky Bernstein <address@hidden>
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; realgud support for the Python ipdb
+
+;;; Code:
+
+;; Press C-x C-e at the end of the next line configure the program in
+;; for building via "make" to get set up.
+;; (compile (format "EMACSLOADPATH=:%s:%s:%s:%s ./autogen.sh" 
(file-name-directory (locate-library "loc-changes.elc")) (file-name-directory 
(locate-library "test-simple.elc")) (file-name-directory (locate-library 
"load-relative.elc")) (file-name-directory (locate-library "realgud.elc"))))
+
+(require 'load-relative)
+
+(defgroup realgud-ipdb  nil
+  "Realgud interface to ipdb"
+  :group 'realgud
+  :version "24.3")
+
+(require-relative-list '( "./ipdb/ipdb" ) "realgud-")
+
+(provide-me)
diff --git a/test/Makefile.am b/test/Makefile.am
new file mode 100644
index 0000000..972821b
--- /dev/null
+++ b/test/Makefile.am
@@ -0,0 +1,73 @@
+lisp_files = $(wildcard *.el)
+EXTRA_DIST = $(lisp_files)
+lisp_LISP = $(lisp_files)
+include $(top_srcdir)/common.mk
+
+PHONY=check test all check-elget test-elget help
+
+#: overall help on running the make targets
+help:
+       @echo "The main function of this Makefile is to facilitate running 
tests."
+       @echo
+       @echo "To run all of the tests, use targets \"test\", \"check\" or 
\"check-short\"."
+       @echo "For example:"
+       @echo
+       @echo "    make check"
+       @echo "or:"
+       @echo "    make check-short"
+       @echo
+       @echo "The -short target uses a filter written in Ruby to remove 
extreanous output."
+       @echo
+       @echo "To run a specific test like test-srcbuf.el, change \".el\" to"
+       @echo "\".run\". For example:"
+       @echo
+       @echo "    make test-srcbuf.run"
+       @echo
+       @echo "Tests can also be run via the Emacs el-get package and this 
loads dependent emacs "
+       @echo "package, like load-relative. To do this, use targets, 
\"check-elget\","
+       @echo "\"test-elget\", or \"check-short-elget\"."
+       @echo
+       @echo  "To run a specific test like test-srcbuf.el via el-get change 
\".el\""
+       @echo "to \".elrun\" For example:"
+       @echo
+       @echo "    make test-srcbuf.elrun"
+
+
+#: same thing as "check"
+test: check
+
+#: same thing as "check-elget"
+test-elget: check-elget
+
+test_files := $(wildcard test-*.el)
+
+CHECK_FILES = $(notdir $(test_files:.el=.run))
+EL_GET_CHECK_FILES = $(notdir $(test_files:.el=.elrun))
+
+#: Run all tests
+check: $(CHECK_FILES)
+
+#: Run all tests via el-get
+check-elget: $(EL_GET_CHECK_FILES)
+
+#: Run all tests with minimum verbosity
+check-short:
+       $(MAKE) check 2>&1  | ruby ../make-check-filter.rb
+
+#: Run all tests with minimum verbosity via el-get
+check-short-elget:
+       $(MAKE) check-elget 2>&1  | ruby ../make-check-filter.rb
+
+test-%.run:
+       (cd $(top_srcdir)/test && EMACSLOADPATH=$(EMACSLOADPATH) $(EMACS) 
--batch --no-site-file --no-splash --load $(@:.run=.el))
+
+#: Run tests using el-get to specify external Lisp dependencies
+test-%.elrun:
+       (cd $(top_srcdir)/test && EMACSLOADPATH=$(EMACSLOADPATH) $(EMACS) 
--batch --no-site-file --no-splash --load ../el-get-install.el --load 
$(@:.elrun=.el))
+
+install-lispLISP: $(lisp_LISP) $(ELCFILES)
+
+# Whatever it is you want to do, it should be forwarded to the
+# to top-level directories
+# %:
+#      $(MAKE) -C .. $@
diff --git a/test/make-check-filter.rb b/test/make-check-filter.rb
new file mode 100644
index 0000000..508c8f6
--- /dev/null
+++ b/test/make-check-filter.rb
@@ -0,0 +1,24 @@
+#!/usr/bin/env ruby
+# Use this to cut out the crud from make check.
+# Use like this:
+#   make check 2>&1  | ruby ../make-check-filter.rb
+# See Makefile.am
+pats = ["^(?:Loading",
+        '(re)?make\[',
+        "Making check in",
+        '\(cd \.\.',
+        "make -C",
+        "Test-Unit",
+        "Fontifying",
+        "`flet'",
+        '\s*$',
+        '##[<>]+$'
+       ].join('|') + ')'
+# puts pats
+skip_re = /#{pats}/
+
+while gets()
+  next if $_.encode!('UTF-8', 'binary',
+                     invalid: :replace, undef: :replace, replace: '') =~ 
skip_re
+  puts $_
+end
diff --git a/test/regexp-helper.el b/test/regexp-helper.el
new file mode 100644
index 0000000..cdcecae
--- /dev/null
+++ b/test/regexp-helper.el
@@ -0,0 +1,61 @@
+(require 'test-simple)
+(require 'realgud)
+
+(eval-when-compile
+  (defvar helper-bps)
+  (defvar helper-info-brkpt)
+  (defvar helper-loc)
+  (defvar helper-tb)
+  (defvar prompt-pat)
+)
+
+(declare-function realgud-loc-pat-regexp 'realgud-backtrace-mode)
+(declare-function realgud-cmdbuf-info-loc-regexp 'realgud-buffer-command)
+(declare-function test-simple-start 'test-simple)
+
+
+(defun setup-regexp-vars(pat-hash)
+  (setq helper-bps         (gethash "brkpt-set" pat-hash))
+  (setq helper-info-brkpt  (gethash "debugger-breakpoint" pat-hash))
+  (setq helper-loc         (gethash "loc"       pat-hash))
+  (setq helper-tb          (gethash "lang-backtrace" pat-hash))
+)
+
+(defun loc-match(text regexp-list)
+  "Match TEXT against regexp field REGEXP"
+  (let ((regexp)
+       (ret-val nil))
+    (unless (listp regexp-list)
+      (setq regexp-list (list regexp-list)))
+    (while regexp-list
+      (setq regexp (car regexp-list))
+      (setq regexp-list (cdr regexp-list))
+      (when (setq ret-val (string-match (realgud-loc-pat-regexp regexp) text))
+       (setq regexp-list nil)))
+    ret-val
+    ))
+
+(defun bp-loc-match(text)
+  (string-match (realgud-loc-pat-regexp helper-bps) text)
+)
+
+(defun tb-loc-match(text)
+  (string-match (realgud-loc-pat-regexp helper-tb) text)
+)
+
+(defun cmdbuf-loc-match(text dbgr)
+  "Match TEXT against cmdbuf-info-loc field VAR"
+  (string-match (realgud-cmdbuf-info-loc-regexp dbgr) text)
+  )
+
+(defun prompt-match(prompt-str &optional num-str fmt-str)
+  (unless fmt-str (setq fmt-str "debugger prompt %s"))
+  (assert-equal 0 (string-match (realgud-loc-pat-regexp prompt-pat)
+                               prompt-str)
+               (format fmt-str prompt-str))
+  (cond (num-str
+        (assert-equal num-str (substring prompt-str
+                                      (match-beginning 1) (match-end 1))))
+       ('t 't))
+  )
+(provide 'realgud-regexp-helper)
diff --git a/test/test-ipdb.el b/test/test-ipdb.el
new file mode 100644
index 0000000..030a94b
--- /dev/null
+++ b/test/test-ipdb.el
@@ -0,0 +1,40 @@
+;; Press C-x C-e at the end of the next line to run this file test 
non-interactively
+;; (test-simple-run "emacs -batch -L %s -l %s" (file-name-directory 
(locate-library "test-simple.elc")) buffer-file-name)
+
+(require 'test-simple)
+(require 'load-relative)
+(load-file "../ipdb/ipdb.el")
+
+(eval-when-compile (defvar test:run-process-save))
+
+(declare-function ipdb-parse-cmd-args 'realgud:ipdb-core)
+(declare-function realgud:ipdb        'realgud:ipdb)
+(declare-function __FILE__            'load-relative)
+
+(test-simple-start)
+
+;; Save value realgud:run-process and change it to something we want
+(setq test:run-process-save (symbol-function 'realgud:run-process))
+(defun realgud:run-process(debugger-name script-filename cmd-args
+                                     minibuffer-histroy &optional no-reset)
+  "Fake realgud:run-process used in testing"
+  (note
+   (format "%s %s %s" debugger-name script-filename cmd-args))
+  (assert-equal "ipdb" debugger-name "debugger name gets passed")
+  (assert-equal (expand-file-name "./gcd.py") script-filename "file name 
check")
+  (assert-equal '("3" "5") (cddr cmd-args) "command args listified")
+  (generate-new-buffer "*cmdbuf-test*")
+  )
+
+(note "ipdb-parse-cmd-args")
+(assert-equal (list nil '("ipdb") (list (expand-file-name "foo")) nil)
+             (ipdb-parse-cmd-args '("ipdb" "foo")))
+(assert-equal (list nil '("ipdb") (list (expand-file-name "program.py") "foo") 
nil)
+             (ipdb-parse-cmd-args
+              '("ipdb" "program.py" "foo")))
+
+(realgud:ipdb "ipdb ./gcd.py 3 5")
+;; Restore the old value of realgud:run-process
+(fset 'realgud:run-process test:run-process-save)
+
+(end-tests)
diff --git a/test/test-regexp-ipdb.el b/test/test-regexp-ipdb.el
new file mode 100644
index 0000000..b9214d0
--- /dev/null
+++ b/test/test-regexp-ipdb.el
@@ -0,0 +1,108 @@
+;; Press C-x C-e at the end of the next line to run this file test 
non-interactively
+;; (test-simple-run "emacs -batch -L %s -l %s" (file-name-directory 
(locate-library "test-simple.elc")) buffer-file-name)
+
+(require 'test-simple)
+(load-file "../ipdb/init.el")
+(load-file "./regexp-helper.el")
+
+(declare-function __FILE__                       'load-relative)
+(declare-function loc-match                     'realgud-helper)
+(declare-function prompt-match                   'regexp-helper)
+(declare-function realgud-loc-pat-file-group     'realgud-regexp)
+(declare-function realgud-loc-pat-line-group     'realgud-regexp)
+
+(test-simple-start)
+
+(eval-when-compile
+  (defvar loc-pat)   (defvar prompt-pat) (defvar realgud:ipdb-pat-hash)
+  (defvar tb-pat)    (defvar test-text)  (defvar prompt-str)
+  (defvar bps-pat)
+)
+
+(set (make-local-variable 'bps-pat)
+      (gethash "brkpt-set" realgud:ipdb-pat-hash))
+
+(set (make-local-variable 'loc-pat)
+     (gethash "loc"       realgud:ipdb-pat-hash))
+
+(set (make-local-variable 'prompt-pat)
+      (gethash "prompt"    realgud:ipdb-pat-hash))
+
+(set (make-local-variable 'tb-pat)
+      (gethash "lang-backtrace" realgud:ipdb-pat-hash))
+
+;; FIXME: we get a void variable somewhere in here when running
+;;        even though we define it in lexical-let. Dunno why.
+;;        setq however will workaround this.
+(setq test-text
+      "  File \"/usr/lib/python2.6/code.py\", line 281, in raw_input")
+(note "traceback location matching")
+
+(assert-t (numberp (loc-match test-text tb-pat)) "basic traceback location")
+
+(assert-equal "/usr/lib/python2.6/code.py"
+             (match-string (realgud-loc-pat-file-group tb-pat)
+                           test-text))
+
+(setq test-text
+      "  File \"/usr/lib/python2.6/code.py\", line 281, in raw_input")
+(loc-match test-text tb-pat)
+(assert-equal "281"
+             (match-string (realgud-loc-pat-line-group tb-pat)
+                           test-text) "extract line number")
+
+(note "breakpoint location matching")
+
+(setq test-text "Breakpoint 1 at /src/git/code/gcd.py:13")
+(assert-t (numberp (loc-match test-text bps-pat))
+         "basic breakpoint location")
+
+(assert-equal "/src/git/code/gcd.py"
+             (match-string (realgud-loc-pat-file-group
+                            bps-pat)
+                           test-text)
+             "extract breakpoint file name")
+
+
+(assert-equal "13"
+             (match-string (realgud-loc-pat-line-group
+                            bps-pat)
+                           test-text)   "extract breakpoint line number")
+
+;; (set test-text "(c:\\working\\python\\helloworld.py:30): <module>")
+;;
+;; (assert-t (numberp (loc-match test-text loc-pat)) "MS DOS position 
location")
+;; ;;
+;; (assert-equal "c:\\working\\python\\helloworld.py"
+;;     (match-string (realgud-loc-pat-file-group loc-pat)
+;;                   test-text)
+;;     (format "Failing file group is %s"
+;;                             (realgud-loc-pat-file-group tb-pat))
+;;     "extract file name")
+;; (assert-equal "30"
+;;           (match-string (realgud-loc-pat-line-group loc-pat)
+;;                         test-text) "extract line number")
+
+(setq test-text "> /usr/bin/ipython(24)<module>")
+(assert-t (numberp (loc-match test-text loc-pat)) "position location")
+(assert-equal "/usr/bin/ipython"
+             (match-string (realgud-loc-pat-file-group loc-pat)
+                           test-text)
+             (format "Failing file group is %s"
+                     (realgud-loc-pat-file-group tb-pat)))
+(assert-equal "24"
+             (match-string (realgud-loc-pat-line-group
+                            loc-pat)
+                           test-text)
+             "extract line number")
+
+
+(note "prompt matching")
+(set (make-local-variable 'prompt-str) "ipdb> ")
+(prompt-match prompt-str nil "debugger prompt: %s")
+(setq prompt-str "ipdb")
+(assert-nil (numberp (loc-match prompt-str prompt-pat))
+           (format "%s %s" "invalid debugger prompt"
+                   prompt-str))
+
+(end-tests)