bug#12196: 24.1.50; setting cache-long-line-scans to non-nil freezes Emacs

[Christopher Schmidt <christopher@ch.ristopher.com>]

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Eli Zaretskii <eliz@gnu.org> writes:
>> In emacs -Q, I did C-x d ~ RET and set `cache-long-line-scans' to t.
>> Then I moved around in that buffer with the arrow keys and prior/
>> next.  After a few seconds, Emacs was frozen.
>>
>> In another test, I started emacs -Q and evaluated
>>
>>   (setq-default cache-long-line-scans t)
>>
>> Then I did some trivial things like changing current buffer and
>> moving around.  In some cases, CPU consumption went to 100% while I
>> did nothing, and Emacs didn't respond anymore.  Another time, Emacs
>> aborted.
>
> I cannot reproduce any of this on my system.  Emacs never freezes on
> me.
>
> Does Emacs really freeze, or does it just do some prolonged operation?
> (And is your CPU really an i486?)  If you wait for a long time, does
> Emacs eventually recover and become responsive again?
>
> If Emacs really freezes, attach a debugger to it when it does, type
> "bt" at the debugger's prompt, and post here everything the debugger
> displays in response.  Then try to follow the advice in etc/DEBUG,
> under "If the symptom of the bug is that Emacs fails to respond", to
> establish which Emacs function, if any, is looping.

I can reproduce this problem.  I am using GNU Emacs 24.2.50.3
(x86_64-unknown-linux-gnu, GTK+ Version 2.24.10) of 2012-08-26, revno:
109786.

Setting cache-long-line-scans to t in various buffer that are meant to
be displayed in a window, such as *Info*, *Help* etc., works just fine.
Setting the default value of cache-long-line-scans to t in my init.el
makes Emacs freeze whenever I try to view a remote post in Gnus.

Here is the backtrace:

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(gdb) backtrace
#0  find_cache_boundary (c=c@entry=0x418e6f0, pos=pos@entry=9711)
    at region-cache.c:185
#1  0x00000000005bcf9d in region_cache_forward (buf=0x3fee4c0, 
    c=c@entry=0x418e6f0, pos=pos@entry=9711, 
    next=next@entry=0x7fff92befe38) at region-cache.c:709
#2  0x0000000000546ce4 in scan_buffer (target=target@entry=10, 
    start=<optimized out>, start@entry=9648, end=9707, end@entry=0, 
    count=1, shortage=shortage@entry=0x7fff92befe88, 
    allow_quit=allow_quit@entry=1) at search.c:687
#3  0x0000000000547402 in find_before_next_newline (
    from=from@entry=9648, to=to@entry=0, cnt=<optimized out>)
    at search.c:945
#4  0x000000000056d78a in Fline_end_position (n=<optimized out>)
    at editfns.c:808
#5  0x0000000000539005 in Fend_of_line (n=<optimized out>)
    at cmds.c:201
#6  0x0000000000573057 in eval_sub (form=<optimized out>)
    at eval.c:2173
#7  0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=70064870) at eval.c:376
#8  0x0000000000575af8 in Fwhile (args=<optimized out>)
    at eval.c:955
#9  0x00000000005731d8 in eval_sub (form=70036598) at eval.c:2121
#10 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#11 0x0000000000576069 in Flet (args=70036678) at eval.c:933
#12 0x00000000005731d8 in eval_sub (form=70036758) at eval.c:2121
#13 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#14 0x0000000000573708 in funcall_lambda (fun=fun@entry=70127990, 
    nargs=nargs@entry=1, arg_vector=arg_vector@entry=0x7fff92bf02d0)
    at eval.c:3038
#15 0x0000000000572a2c in apply_lambda (fun=fun@entry=70127990, 
    args=<optimized out>) at eval.c:2922
#16 0x0000000000572dea in eval_sub (form=69980838) at eval.c:2249
#17 0x00000000005732c0 in Fsetq (args=<optimized out>) at eval.c:445
#18 0x00000000005731d8 in eval_sub (form=69980870) at eval.c:2121
#19 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#20 0x00000000005731d8 in eval_sub (form=form@entry=69310054)
    at eval.c:2121
#21 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#22 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#23 0x0000000000576069 in Flet (args=69980918) at eval.c:933
#24 0x00000000005731d8 in eval_sub (form=69710358) at eval.c:2121
#25 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=69710374) at eval.c:376
#26 0x0000000000575af8 in Fwhile (args=<optimized out>)
    at eval.c:955
#27 0x00000000005731d8 in eval_sub (form=69710550) at eval.c:2121
#28 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=69460182) at eval.c:376
#29 0x000000000056f1bd in Fsave_restriction (body=69460182)
    at editfns.c:3426
#30 0x00000000005731d8 in eval_sub (form=69710582) at eval.c:2121
#31 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#32 0x0000000000576069 in Flet (args=69710598) at eval.c:933
#33 0x00000000005731d8 in eval_sub (form=69681366) at eval.c:2121
#34 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=74040470) at eval.c:376
#35 0x000000000056736d in Fsave_current_buffer (args=74040470)
    at editfns.c:954
#36 0x00000000005731d8 in eval_sub (form=form@entry=74040454)
    at eval.c:2121
#37 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#38 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#39 0x0000000000573708 in funcall_lambda (fun=fun@entry=70037046, 
    nargs=nargs@entry=2, arg_vector=arg_vector@entry=0x7fff92bf0f40)
    at eval.c:3038
#40 0x0000000000572a2c in apply_lambda (fun=fun@entry=70037046, 
    args=<optimized out>) at eval.c:2922
#41 0x0000000000572dea in eval_sub (form=69682070) at eval.c:2249
#42 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#43 0x0000000000573708 in funcall_lambda (fun=69681878, 
    nargs=nargs@entry=0, arg_vector=arg_vector@entry=0x7fff92bf11d8)
    at eval.c:3038
#44 0x00000000005739ab in Ffuncall (nargs=1, args=0x7fff92bf11d0)
    at eval.c:2874
#45 0x00000000005731a2 in eval_sub (form=<optimized out>)
    at eval.c:2145
#46 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=63040262) at eval.c:376
#47 0x000000000056f1bd in Fsave_restriction (body=63040262)
    at editfns.c:3426
#48 0x00000000005731d8 in eval_sub (form=63040342) at eval.c:2121
#49 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#50 0x00000000005731d8 in eval_sub (form=74143078) at eval.c:2121
#51 0x00000000005731d8 in eval_sub (form=form@entry=74143030)
    at eval.c:2121
#52 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#53 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=73849462) at eval.c:376
#54 0x0000000000575af8 in Fwhile (args=<optimized out>)
    at eval.c:955
#55 0x00000000005731d8 in eval_sub (form=73849430) at eval.c:2121
#56 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#57 0x0000000000576069 in Flet (args=73849398) at eval.c:933
#58 0x00000000005731d8 in eval_sub (form=form@entry=73849382)
    at eval.c:2121
#59 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#60 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=73823350) at eval.c:376
#61 0x0000000000571e2b in internal_catch (tag=65271776, 
    func=0x5733a0 <Fprogn>, arg=73823350) at eval.c:1079
#62 0x00000000005731d8 in eval_sub (form=73823270) at eval.c:2121
#63 0x0000000000572ed4 in eval_sub (form=form@entry=73823238)
    at eval.c:2158
#64 0x0000000000572f80 in eval_sub (form=form@entry=73823398)
    at eval.c:2245
#65 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#66 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#67 0x0000000000576069 in Flet (args=63015958) at eval.c:933
#68 0x00000000005731d8 in eval_sub (form=63018070) at eval.c:2121
#69 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#70 0x0000000000573708 in funcall_lambda (fun=fun@entry=63040054, 
    nargs=nargs@entry=4, arg_vector=arg_vector@entry=0x7fff92bf21a0)
    at eval.c:3038
#71 0x0000000000572a2c in apply_lambda (fun=fun@entry=63040054, 
    args=<optimized out>) at eval.c:2922
#72 0x0000000000572dea in eval_sub (form=61562134) at eval.c:2249
#73 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=61564742) at eval.c:376
#74 0x000000000056f1bd in Fsave_restriction (body=61564742)
    at editfns.c:3426
#75 0x00000000005731d8 in eval_sub (form=61564822) at eval.c:2121
#76 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#77 0x00000000005731d8 in eval_sub (form=61535622) at eval.c:2121
#78 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#79 0x0000000000576069 in Flet (args=61537910) at eval.c:933
#80 0x00000000005731d8 in eval_sub (form=61538182) at eval.c:2121
#81 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#82 0x00000000005731d8 in eval_sub (form=74158518) at eval.c:2121
#83 0x0000000000575df5 in Funwind_protect (args=74158502)
    at eval.c:1178
#84 0x00000000005731d8 in eval_sub (form=74158486) at eval.c:2121
#85 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=74158470) at eval.c:376
#86 0x000000000056736d in Fsave_current_buffer (args=74158470)
    at editfns.c:954
#87 0x00000000005731d8 in eval_sub (form=74158454) at eval.c:2121
#88 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#89 0x0000000000576069 in Flet (args=74158422) at eval.c:933
#90 0x00000000005731d8 in eval_sub (form=form@entry=74158406)
    at eval.c:2121
#91 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#92 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=61603558) at eval.c:376
#93 0x000000000056d9fd in Fsave_excursion (args=61603558)
    at editfns.c:939
#94 0x00000000005731d8 in eval_sub (form=61538726) at eval.c:2121
#95 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#96 0x0000000000573708 in funcall_lambda (fun=61601478, 
    nargs=nargs@entry=0, arg_vector=arg_vector@entry=0x7fff92bf2eb8)
    at eval.c:3038
#97 0x00000000005739ab in Ffuncall (nargs=1, args=0x7fff92bf2eb0)
    at eval.c:2874
#98 0x00000000005731a2 in eval_sub (form=<optimized out>)
    at eval.c:2145
#99 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#100 0x00000000005731d8 in eval_sub (form=74158710) at eval.c:2121
#101 0x00000000005731d8 in eval_sub (form=form@entry=74158662)
    at eval.c:2121
#102 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#103 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#104 0x0000000000576069 in Flet (args=61041766) at eval.c:933
#105 0x00000000005731d8 in eval_sub (form=61041910) at eval.c:2121
#106 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#107 0x0000000000573708 in funcall_lambda (fun=fun@entry=61040678, 
    nargs=nargs@entry=0, arg_vector=arg_vector@entry=0x7fff92bf34a0)
    at eval.c:3038
#108 0x0000000000572a2c in apply_lambda (fun=fun@entry=61040678, 
    args=<optimized out>) at eval.c:2922
#109 0x0000000000572dea in eval_sub (form=61043750) at eval.c:2249
#110 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#111 0x00000000005731d8 in eval_sub (form=74118502) at eval.c:2121
#112 0x00000000005731d8 in eval_sub (form=form@entry=74118454)
    at eval.c:2121
#113 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#114 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#115 0x00000000005731d8 in eval_sub (form=61123718) at eval.c:2121
#116 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#117 0x00000000005731d8 in eval_sub (form=61125494) at eval.c:2121
#118 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=61125990) at eval.c:376
#119 0x000000000056d9fd in Fsave_excursion (args=61125990)
    at editfns.c:939
#120 0x00000000005731d8 in eval_sub (form=61126022) at eval.c:2121
#121 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#122 0x0000000000576282 in FletX (args=61126038) at eval.c:863
#123 0x00000000005731d8 in eval_sub (form=61126678) at eval.c:2121
#124 0x00000000005733c5 in Fprogn (args=68740848, 
    args@entry=61126774) at eval.c:376
#125 0x000000000056d9fd in Fsave_excursion (args=61126774)
    at editfns.c:939
#126 0x00000000005731d8 in eval_sub (form=61127078) at eval.c:2121
#127 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#128 0x0000000000573708 in funcall_lambda (fun=fun@entry=61042134, 
    nargs=nargs@entry=2, arg_vector=arg_vector@entry=0x7fff92bf3ef0)
    at eval.c:3038
#129 0x0000000000572a2c in apply_lambda (fun=fun@entry=61042134, 
    args=<optimized out>) at eval.c:2922
#130 0x0000000000572dea in eval_sub (form=47227846) at eval.c:2249
#131 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#132 0x00000000005731d8 in eval_sub (form=47200358) at eval.c:2121
#133 0x0000000000573343 in Fprog1 (args=47227782) at eval.c:399
#134 0x00000000005731d8 in eval_sub (form=47200374) at eval.c:2121
#135 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#136 0x00000000005731d8 in eval_sub (form=47200662) at eval.c:2121
#137 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#138 0x0000000000573708 in funcall_lambda (fun=fun@entry=47226182, 
    nargs=nargs@entry=2, arg_vector=arg_vector@entry=0x7fff92bf43f0)
    at eval.c:3038
#139 0x0000000000572a2c in apply_lambda (fun=fun@entry=47226182, 
    args=<optimized out>) at eval.c:2922
#140 0x0000000000572dea in eval_sub (form=48447638) at eval.c:2249
#141 0x00000000005731d8 in eval_sub (form=48449990) at eval.c:2121
#142 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#143 0x00000000005731d8 in eval_sub (form=48452166) at eval.c:2121
#144 0x0000000000573343 in Fprog1 (args=48467126) at eval.c:399
#145 0x00000000005731d8 in eval_sub (form=48452214) at eval.c:2121
#146 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#147 0x0000000000573708 in funcall_lambda (fun=fun@entry=48485302, 
    nargs=nargs@entry=1, arg_vector=arg_vector@entry=0x7fff92bf48e0)
    at eval.c:3038
#148 0x0000000000572a2c in apply_lambda (fun=fun@entry=48485302, 
    args=<optimized out>) at eval.c:2922
#149 0x0000000000572dea in eval_sub (form=52155574) at eval.c:2249
#150 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#151 0x00000000005731d8 in eval_sub (form=form@entry=69231750)
    at eval.c:2121
#152 0x0000000000572f80 in eval_sub (form=<optimized out>)
    at eval.c:2245
#153 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#154 0x0000000000576069 in Flet (args=52155846) at eval.c:933
#155 0x00000000005731d8 in eval_sub (form=52155926) at eval.c:2121
#156 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#157 0x00000000005731d8 in eval_sub (form=52155942) at eval.c:2121
#158 0x00000000005731d8 in eval_sub (form=52156118) at eval.c:2121
#159 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#160 0x00000000005731d8 in eval_sub (form=52156838) at eval.c:2121
#161 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#162 0x00000000005731d8 in eval_sub (form=52164518) at eval.c:2121
#163 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#164 0x0000000000576282 in FletX (args=52164534) at eval.c:863
#165 0x00000000005731d8 in eval_sub (form=52135222) at eval.c:2121
#166 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#167 0x0000000000573708 in funcall_lambda (fun=fun@entry=52152886, 
    nargs=nargs@entry=6, arg_vector=arg_vector@entry=0x7fff92bf5380)
    at eval.c:3038
#168 0x0000000000572a2c in apply_lambda (fun=fun@entry=52152886, 
    args=<optimized out>) at eval.c:2922
#169 0x0000000000572dea in eval_sub (form=52138534) at eval.c:2249
#170 0x0000000000575ac4 in For (args=68740848) at eval.c:276
#171 0x00000000005731d8 in eval_sub (form=52138550) at eval.c:2121
#172 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#173 0x0000000000576069 in Flet (args=52138566) at eval.c:933
#174 0x00000000005731d8 in eval_sub (form=52138630) at eval.c:2121
#175 0x00000000005732c0 in Fsetq (args=<optimized out>)
    at eval.c:445
#176 0x00000000005731d8 in eval_sub (form=52138662) at eval.c:2121
#177 0x0000000000572ed4 in eval_sub (form=<optimized out>)
    at eval.c:2158
#178 0x0000000000575a84 in Fand (args=68740848) at eval.c:300
#179 0x00000000005731d8 in eval_sub (form=form@entry=52138710)
    at eval.c:2121
#180 0x0000000000575b00 in Fwhile (args=<optimized out>)
    at eval.c:952
#181 0x00000000005731d8 in eval_sub (form=52138726) at eval.c:2121
#182 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#183 0x0000000000576069 in Flet (args=52138742) at eval.c:933
#184 0x00000000005731d8 in eval_sub (form=52138774) at eval.c:2121
#185 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#186 0x0000000000573708 in funcall_lambda (fun=fun@entry=52136086, 
    nargs=nargs@entry=7, arg_vector=arg_vector@entry=0x7fff92bf5da0)
    at eval.c:3038
#187 0x0000000000572a2c in apply_lambda (fun=fun@entry=52136086, 
    args=<optimized out>) at eval.c:2922
#188 0x0000000000572dea in eval_sub (form=51237414) at eval.c:2249
#189 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#190 0x0000000000576069 in Flet (args=51238406) at eval.c:933
#191 0x00000000005731d8 in eval_sub (form=51238118) at eval.c:2121
#192 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#193 0x0000000000573708 in funcall_lambda (fun=fun@entry=51236246, 
    nargs=nargs@entry=3, arg_vector=arg_vector@entry=0x7fff92bf6160)
    at eval.c:3038
#194 0x0000000000572a2c in apply_lambda (fun=fun@entry=51236246, 
    args=<optimized out>) at eval.c:2922
#195 0x0000000000572dea in eval_sub (form=49455654) at eval.c:2249
#196 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#197 0x00000000005731d8 in eval_sub (form=49460166) at eval.c:2121
#198 0x00000000005733c5 in Fprogn (args=68740848) at eval.c:376
#199 0x0000000000573708 in funcall_lambda (fun=49532326, 
    nargs=nargs@entry=1, arg_vector=arg_vector@entry=0x7fff92bf6548)
    at eval.c:3038
#200 0x00000000005739ab in Ffuncall (nargs=nargs@entry=2, 
    args=args@entry=0x7fff92bf6540) at eval.c:2874
#201 0x00000000005700f5 in Fcall_interactively (function=50510242, 
    record_flag=11981378, keys=12016597) at callint.c:853
#202 0x0000000000573b1f in Ffuncall (nargs=nargs@entry=4, 
    args=args@entry=0x7fff92bf66e0) at eval.c:2820
#203 0x0000000000573d54 in call3 (fn=<optimized out>, 
    arg1=<optimized out>, arg2=<optimized out>, 
    arg3=<optimized out>) at eval.c:2638
#204 0x00000000004fe13d in Fcommand_execute (cmd=<optimized out>, 
    record_flag=<optimized out>, keys=<optimized out>, 
    special=<optimized out>) at keyboard.c:10375
#205 0x000000000050bd6c in command_loop_1 () at keyboard.c:1639
#206 0x0000000000571f33 in internal_condition_case (
    bfun=bfun@entry=0x50b9d0 <command_loop_1>, handlers=12033154, 
    hfun=hfun@entry=0x500610 <cmd_error>) at eval.c:1322
#207 0x00000000004fec4e in command_loop_2 (
    ignore=ignore@entry=11981378) at keyboard.c:1204
#208 0x0000000000571e2b in internal_catch (tag=65271776, 
    func=func@entry=0x4fec30 <command_loop_2>, arg=11981378)
    at eval.c:1079
#209 0x00000000005000e7 in command_loop () at keyboard.c:1183
#210 recursive_edit_1 () at keyboard.c:804
#211 0x0000000000500415 in Frecursive_edit () at keyboard.c:868
#212 0x000000000041525d in main (argc=2, argv=<optimized out>)
    at emacs.c:1654

Lisp Backtrace:
"end-of-line" (0x92beff30)
"while" (0x92bf0018)
"let" (0x92bf0198)
"gnus-article-foldable-buffer" (0x92bf02d0)
"setq" (0x92bf0498)
"if" (0x92bf0598)
"unless" (0x92bf0688)
"let" (0x92bf0818)
"while" (0x92bf0938)
"save-restriction" (0x92bf0a58)
"let" (0x92bf0bf8)
"save-current-buffer" (0x92bf0d18)
"with-current-buffer" (0x92bf0e08)
"gnus-article-fill-cited-article" (0x92bf0f40)
"gnus-article-fill-cited-long-lines" (0x92bf11d8)
"funcall" (0x92bf11d0)
"save-restriction" (0x92bf1338)
"progn" (0x92bf1438)
"if" (0x92bf1528)
"when" (0x92bf1618)
"while" (0x92bf1738)
"let" (0x92bf18b8)
"cl--dolist" (0x92bf19a8)
"catch" (0x92bf1be8)
"cl--block-wrapper" (0x92bf1cd8)
"cl-block" (0x92bf1dc8)
"dolist" (0x92bf1eb8)
"let" (0x92bf2068)
"gnus-treat-article" (0x92bf21a0)
"save-restriction" (0x92bf2388)
"if" (0x92bf2488)
"let" (0x92bf2618)
"progn" (0x92bf2718)
"unwind-protect" (0x92bf2828)
"save-current-buffer" (0x92bf2948)
"let" (0x92bf2ac8)
"save-selected-window" (0x92bf2bb8)
"save-excursion" (0x92bf2cd8)
"gnus-display-mime" (0x92bf2eb8)
"funcall" (0x92bf2eb0)
"progn" (0x92bf2ff8)
"if" (0x92bf30e8)
"when" (0x92bf31d8)
"let" (0x92bf3368)
"gnus-article-prepare-display" (0x92bf34a0)
"progn" (0x92bf3648)
"if" (0x92bf3738)
"when" (0x92bf3828)
"if" (0x92bf3928)
"if" (0x92bf3a28)
"save-excursion" (0x92bf3b48)
"let*" (0x92bf3c98)
"save-excursion" (0x92bf3db8)
"gnus-article-prepare" (0x92bf3ef0)
"if" (0x92bf40a8)
"prog1" (0x92bf41b8)
"if" (0x92bf42b8)
"gnus-summary-display-article" (0x92bf43f0)
"if" (0x92bf4598)
"if" (0x92bf4698)
"prog1" (0x92bf47a8)
"gnus-summary-goto-article" (0x92bf48e0)
"if" (0x92bf4a98)
"unless" (0x92bf4b88)
"let" (0x92bf4d08)
"progn" (0x92bf4e08)
"if" (0x92bf4ef8)
"if" (0x92bf4ff8)
"cond" (0x92bf50f8)
"let*" (0x92bf5248)
"gnus-summary-read-group-1" (0x92bf5380)
"or" (0x92bf5558)
"let" (0x92bf56d8)
"setq" (0x92bf57e8)
"null" (0x92bf58d8)
"and" (0x92bf59d8)
"while" (0x92bf5ae8)
"let" (0x92bf5c68)
"gnus-summary-read-group" (0x92bf5da0)
"let" (0x92bf6028)
"gnus-group-read-group" (0x92bf6160)
"if" (0x92bf6328)
"gnus-topic-read-group" (0x92bf6548)
"call-interactively" (0x92bf66e8)

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Do you want me to investigate?

        Christopher