From: emmanuel.thome@inria.fr   
      
   Package: vim-nox   
   Version: 2:9.1.2103-1   
   Severity: normal   
   X-Debbugs-Cc: emmanuel.thome@inria.fr   
      
   I observe a bug with the following setup:   
      
       docker run --rm -ti debian:testing   
       apt update   
       apt install vim-nox   
       echo N=21403246502407449612644230728393335630086147151447550   
   7797754920881418023447140136643345519095804679610992851872470914   
   87687396261921557363047454770520805119056493106681 > a.py   
       vim --clean a.py   
      
   The outcome is that vim errors out with:   
      
       E363: Pattern uses more memory than 'maxmempattern'   
      
   As a consequence of that error, syntax highlighting is then no longer   
   active in the buffer.   
      
   The precise vim version is:   
      
       vim --version | head -n 2   
      
       VIM - Vi IMproved 9.1 (2024 Jan 02, compiled Jan 23 2026 11:27:15)   
       Included patches: 1-948, 950-2103   
      
   Other versions checked:   
      
       More recent in Debian: The bug also occurs with 2:9.1.2141-1   
       Less recent in Debian: The bug does *not* occur with 2:9.1.1230-2   
      
   Upsteam has a strinkingly similar issue reported.   
      
       https://github.com/vim/vim/issues/19079   
      
   Apparently the collection of patches 1-2050 does not encounter the   
   issue, so the faulty patch might be in the set 949, 2051-2103   
      
   Best,   
      
   -- Package-specific info:   
      
   --- real paths of main Vim binaries ---   
   /usr/bin/vi is /usr/bin/vim.nox   
   /usr/bin/vim is /usr/bin/vim.nox   
      
   -- System Information:   
   Debian Release: forky/sid   
     APT prefers testing   
     APT policy: (500, 'testing')   
   Architecture: amd64 (x86_64)   
      
   Kernel: Linux 6.17.11+deb14-amd64 (SMP w/8 CPU threads; PREEMPT)   
   Kernel taint flags: TAINT_USER   
   Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set   
   Shell: /bin/sh linked to /usr/bin/dash   
   Init: unable to detect   
      
   Versions of packages vim-nox depends on:   
   ii  libacl1        2.3.2-2+b2   
   ii  libc6          2.42-11   
   ii  libgpm2        1.20.7-12+b1   
   ii  liblua5.1-0    5.1.5-11+b1   
   ii  libperl5.40    5.40.1-7   
   ii  libpython3.13  3.13.12-1   
   ii  libruby3.3     3.3.8-2   
   ii  libselinux1    3.9-4+b1   
   ii  libsodium23    1.0.18-2   
   ii  libtcl8.6      8.6.17+dfsg-1+b1   
   ii  libtinfo6      6.6+20251231-1   
   ii  vim-common     2:9.1.2103-1   
   ii  vim-runtime    2:9.1.2103-1   
      
   vim-nox recommends no packages.   
      
   Versions of packages vim-nox suggests:   
   pn  cscope      
   pn  vim-doc     
      
   -- no debconf information   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)