Package: debhelper
Version: 12.2.3
Severity: normal

Hi,

While working on my manpages-pl source package, I've noticed that the
dh_installman step takes more time to execute than all other build steps 
together.

This poor performance is caused by recoding all (i.e. about 1500 in case
of manpages-pl) man pages into UTF-8, what is pretty much useless in case 
of my package, because the pages are in UTF-8 already. 

It would be nice if dh_installman could have some option to disable recoding 
or if it could at least filter the manpages to recode with `isutf8 -l'
or similar command. (I've just checked that 
'isutf8 -l debian/tmp/usr/share/man/pl/man*/*' inside the package is really
quick to determine that all files are in UTF-8).

Regards,
robert

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (990, 'unstable-debug'), (990, 'unstable'), (990, 'testing'), 
(990, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.37-vox (SMP w/4 CPU cores)
Kernel taint flags: TAINT_UNSIGNED_MODULE
Locale: LANG=pl_PL.UTF-8, LC_CTYPE=pl_PL.UTF-8 (charmap=UTF-8), 
LANGUAGE=pl_PL.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages debhelper depends on:
ii  autotools-dev            20180224.1
ii  dh-autoreconf            19
ii  dh-strip-nondeterminism  1.4.0-1
ii  dpkg                     1.19.7
ii  dpkg-dev                 1.19.7
ii  dwz                      0.12.20190723-1
ii  file                     1:5.37-5
ii  libdpkg-perl             1.19.7
ii  man-db                   2.8.5-2
ii  perl                     5.28.1-6
ii  po-debconf               1.0.21

debhelper recommends no packages.

Versions of packages debhelper suggests:
pn  dh-make  <none>

-- no debconf information

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