Please write in English if possible, because the Emacs maintainers usually do not have translators to read other languages for them. Your bug report will be posted to the emacs-pretest-bug@gnu.org mailing list. Please describe exactly what actions triggered the bug and the precise symptoms of the bug. If you can, give a recipe starting from `emacs -Q': * * * In Emacs 23.1.90.1, tab completion in M-x gud-gdb produces spurious control-M characters; it almost appears as if Ctrl-M is being appended to each symbol name offered for completion. Below, I will give steps to reproduce this behavior, and the results that I observe when following these steps. For this example, any time that you see "^M" (consisting of two characters -- "^" and "M"), please interpret this as the visual representation of the single character Ctrl-M (0x0d). First we will need a C program to debug. I will use the following program: ---------- begin demo2.c -------------- #include static void add_one(int * x) { *x += 1; } static void add_two (int * x) { *x += 2; } int main(void) { int val = 0; add_one(&val); add_two(&val); printf("val=%d\n", val); return 0; } ---------- end demo2.c -------------- STEPS TO REPRODUCE ------------------ (1) Compile demo2.c. gcc -g -o demo2 demo2.c (2) start emacs. emacs -Q -nw demo2.c (3) start the debugger M-x gud-gdb RET Emacs offers the following: "Run gud-gdb (like this): gdb --fullname demo2" Press RETURN to accept the gdb command line. (4) Emacs starts the debugger in buffer "*gud-demo2*", and displays the "(gdb)" prompt. At the gdb prompt enter the commands - b main RETURN - run RETURN (5) Emacs begins to run demo2 under gdb, and breaks in the first line of main. (6) I'd like to set a breakpoint in function "add_one". At the (gdb) prompt in the *gud-demo* buffer, I type "b add TAB". After I press TAB, emacs displays a *Completions* buffer with the following: --------------------------------- In this buffer, type RET to select the completion near point. Possible completions are: add_fdes^M add_one^M add_profil^M add_two^M addcmd^M addr2ascii^M --------------------------------- Note that every symbol is suffixed with "^M" (7) At the (gdb) prompt in the "*gud-demo*" buffer, I type the characters "_o", so that the current (gdb) prompt line contains "b add_o". I press TAB to complete the function name. *gud-demo* completes the function name, and displays --------------------------------- (gdb) b add_one^M --------------------------------- Note that a "^M" was appended to the completed symbol name. (8) At the (gdb) prompt, I type RETURN to create the breakpoint. Emacs responds with --------------------------------- Breakpoint 2 at 0x1f88: file demo2.c, line 4. (gdb) (gdb) --------------------------------- Note that *gud-demo* displays two (gdb) prompts after I press RETURN. (9) At the (gdb) prompt, I type "c RETURN" to continue running demo2. (10) After reaching the breakpoint in add_one, I type "c RETURN" to continue again. demo2 continues executing and exits. After demo2 exits, the *gud-demo2* buffer contains the following contents: --------------------------------- Current directory is ~/ GNU gdb 6.3.50-20050815 (Apple version gdb-768) (Tue Oct 2 04:07:49 UTC 2007) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-apple-darwin"...Reading symbols for shared libraries ... done (gdb) b main Breakpoint 1 at 0x1fb9: file demo2.c, line 12. (gdb) run Starting program: /Users/srevilak/demo2 Reading symbols for shared libraries ++. done Breakpoint 1, main () at demo2.c:12 (gdb) b add_one^M Breakpoint 2 at 0x1f88: file demo2.c, line 4. (gdb) (gdb) c Continuing. Breakpoint 2, add_one (x=0xbffff16c) at demo2.c:4 (gdb) c Continuing. val=3 Program exited normally. (gdb) --------------------------------- HOW THIS DIFFERS FROM EXPECTED BEHAVIOR --------------------------------------- * I did not expect to see ^M appended to each symbol name in the *completions* buffer (step 6). * I did not expect to see ^M appended to the completed symbol name (step 7). * I did not expect to see the extra (gdb) prompt in step 8. NOTES: ----- For this report, gcc is $ gcc --version i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5465) Copyright (C) 2005 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. gdb is $ gdb --version GNU gdb 6.3.50-20050815 (Apple version gdb-768) (Tue Oct 2 04:07:49 UTC 2007) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-apple-darwin". The operating system is Mac OS X 10.5.8 $ uname -a Darwin oatmeal.local 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386 i386 The same behavior occurs with GNU Emacs 23.1.90.1 (powerpc-apple-darwin8.11.0, NS apple-appkit-824.48) on Mac OS X 10.4.11 * * * If Emacs crashed, and you have the Emacs process in the gdb debugger, please include the output from the following gdb commands: `bt full' and `xbacktrace'. For information about debugging Emacs, please read the file /Applications/Emacs.app/Contents/Resources/etc/DEBUG. In GNU Emacs 23.1.90.1 (i386-apple-darwin9.8.0, NS apple-appkit-949.54) of 2009-12-09 on oatmeal.ma.runwaynine.com Windowing system distributor `Apple', version 10.3.949 configured using `configure '--with-ns'' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: C value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: nil value of $XMODIFIERS: nil locale-coding-system: nil default enable-multibyte-characters: t Major mode: Lisp Interaction Minor modes in effect: tooltip-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t global-auto-composition-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent input: ESC x r e p o r t - e m TAB RET Recent messages: ("/Applications/Emacs.app/Contents/MacOS/Emacs") For information about GNU Emacs and the GNU system, type C-h C-a. Load-path shadows: None found. 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