Hitting C-x C-f: Breakpoint 3, text_read_only (propval=58721329) at /Users/magnus/src/emacs/src/textprop.c:89 89 Fsignal (Qtext_read_only, STRINGP (propval) ? Fcons (propval, Qnil) : Qnil); (gdb) bt #0 text_read_only (propval=58721329) at /Users/magnus/src/emacs/src/textprop.c:89 #1 0x000a3ee8 in prepare_to_modify_buffer (start=2663756, end=1, preserve_ptr=0x2862400) at /Users/magnus/src/emacs/src/insdel.c:2036 #2 0x000a3ee8 in prepare_to_modify_buffer (start=2663756, end=1, preserve_ptr=0x2862400) at /Users/magnus/src/emacs/src/insdel.c:2036 #3 0x000a36f4 in del_range_1 (from=1, to=2684688, prepare=1, ret_string=1) at /Users/magnus/src/emacs/src/insdel.c:1794 #4 0x0009a33c in Ferase_buffer () at /Users/magnus/src/emacs/src/buffer.c:2041 #5 0x00060278 in run_pre_post_conversion_on_str (str=42345472, coding=0x3800401, encodep=2652944) at /Users/magnus/src/emacs/src/coding.c:6046 #6 0x000609b4 in decode_coding_string (str=42345472, coding=0x1, nocopy=2654832) at /Users/magnus/src/emacs/src/coding.c:6256 #7 0x00062604 in code_convert_string_norecord (string=1, coding_system=8588080, encodep=7) at /Users/magnus/src/emacs/src/coding.c:7087 #8 0x000b3224 in Fread_file_name (prompt=2684688, dir=42345472, default_filename=7, mustmatch=2613112, initial=2654832, predicate=58721281) at /Users/magnus/src/emacs/src/fileio.c:6256 #9 0x000e92f0 in Ffuncall (nargs=58721329, args=0x2862400) at /Users/magnus/src/emacs/src/eval.c:2778 #10 0x00115b9c in Fbyte_code (bytestr=1, vector=7, maxdepth=42345472) at /Users/magnus/src/emacs/src/bytecode.c:686 #11 0x000e988c in funcall_lambda (fun=42345472, nargs=58721281, arg_vector=0x287b10) at /Users/magnus/src/emacs/src/eval.c:2944 #12 0x000e955c in apply_lambda (fun=58721281, args=1, eval_flag=42345472) at /Users/magnus/src/emacs/src/eval.c:2866 #13 0x000e8704 in Feval (form=1735684) at /Users/magnus/src/emacs/src/eval.c:2170 #14 0x000e3e00 in Fcall_interactively (function=58874817, record_flag=58721281, keys=2678648) at /Users/magnus/src/emacs/src/callint.c:383 #15 0x0008c1ec in Fcommand_execute (cmd=58874817, record_flag=2654684, keys=58721281, special=2687268) at /Users/magnus/src/emacs/src/keyboard.c:9679 #16 0x00080e54 in command_loop_1 () at /Users/magnus/src/emacs/src/keyboard.c:1779 #17 0x000e70f8 in internal_condition_case (bfun=0x7fd44 , handlers=58766401, hfun=0x7f6d4 ) at /Users/magnus/src/emacs/src/eval.c:1367 #18 0x0007fafc in command_loop_2 () at /Users/magnus/src/emacs/src/keyboard.c:1309 #19 0x000e6b6c in internal_catch (tag=58721329, func=0x7fabc , arg=58721281) at /Users/magnus/src/emacs/src/eval.c:1128 #20 0x0007fa54 in command_loop () at /Users/magnus/src/emacs/src/keyboard.c:1288 #21 0x0007f43c in recursive_edit_1 () at /Users/magnus/src/emacs/src/keyboard.c:981 #22 0x0007f5d4 in Frecursive_edit () at /Users/magnus/src/emacs/src/keyboard.c:1042 #23 0x0007e0d4 in main (argc=-1073747056, argv=0x3825bc1) at /Users/magnus/src/emacs/src/emacs.c:1736