Hello,
I found a problem while using QuickFix list with a mounted network folder. It
becomes very slow, because Vim performs stat() request for _each_ file from the
list during it's initialization.
Problem can be easily reproduced while running Vim under strace and performing
:cgetfile command (I can provide more details if needed).
Environment:
VIM - Vi IMproved 8.1 (2018 May 18, compiled Mar 8 2019 22:29:27)
ArchLinux
Backtrace for this stat() call:
```
#0 0x00007faeced7fd99 in __xstat64 () at /usr/lib/libc.so.6
#1 0x0000556baf141df8 in buflist_new (ffname_arg=0x556baf8b1790 "a",
sfname_arg=0x0, lnum=0, flags=16) at buffer.c:1898
#2 0x0000556baf2880e9 in qf_get_fnum (qi=0x556baf4493e0 <ql_info>, qf_idx=1,
directory=0x0, fname=0x556baf8b1790 "a") at quickfix.c:2319
#3 0x0000556baf287821 in qf_add_entry
(qi=0x556baf4493e0 <ql_info>, qf_idx=1, dir=0x0, fname=0x556baf8b1790 "a",
module=0x556baf8b1380 "", bufnum=0, mesg=0x556baf8b0f70 " <<lineA>> lineA",
lnum=1, col=0, vis_col=0, pattern=0x556baf905c50 "", nr=-1, type=0, valid=1) at
quickfix.c:2035
#4 0x0000556baf286fd1 in qf_init_ext
(qi=0x556baf4493e0 <ql_info>, qf_idx=1, efile=0x556baf8d72c0 "qf",
buf=0x556baf8aa190, tv=0x0, errorformat=0x556baf8ad070 "%*[^\"]\"%f\"%*\\D%l:
%m,\"%f\"%*\\D%l: %m,%-G%f:%l: (Each undeclared identifier is reported only
once,%-G%f:%l: for each function it appears in.),%-GIn file included from
%f:%l:%c:,%-GIn file included from "..., newlist=1, lnumfirst=0, lnumlast=0,
qf_title=0x556baf449900 <qftitle_str> ":cg qf", enc=0x556baf8addc0 "") at
quickfix.c:1687
#5 0x0000556baf287211 in qf_init
(wp=0x0, efile=0x556baf8d72c0 "qf", errorformat=0x556baf8ad070
"%*[^\"]\"%f\"%*\\D%l: %m,\"%f\"%*\\D%l: %m,%-G%f:%l: (Each undeclared
identifier is reported only once,%-G%f:%l: for each function it appears
in.),%-GIn file included from %f:%l:%c:,%-GIn file included from "...,
newlist=1, qf_title=0x556baf449900 <qftitle_str> ":cg qf", enc=0x556baf8addc0
"") at quickfix.c:1767
...
```
This problem makes it almost impossible to use QuickFix list in my environment.
All what I need is a buffer that displays the list of files with line numbers
and possibility to open these files, but without implicit stat() requests to
all these files.
Could you please advice, is it possible to workaround this problem? Or maybe I
should use something else instead of QuickFix, maybe some third-party plugin?
Regards,
Yury
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