Description of problem:
In Red Hat Bugzilla #1035606, the problem of garbled characters in some man pages has been resolved by using file command.
But recently, because of incorrect determine in file command, vim's Japanese man page garbled again.
I propose that add an option to file command in vim.spec, to determine file type without magic file.

Version-Release number of selected component (if applicable):


How reproducible:
$ LC_MESSAGES=ja_JP.utf8 man vim


Actual results:

Not displayed as Japanese, as below.

VIM(1)                        General Commands Manual                        VIM(1)

a<U+0090><U+008D>a<U+0089><U+008D>
       vim - Vi IMproved, a<U+0083><U+0097>a<U+0083>a<U+0082>°a<U+0083>ca<U+0083>
<U+009E>a<U+0081>Ra<U+0083><U+0086>a<U+0082>a<U+0082>1a<U+0083><U+0088>a<U+0082>¨a
<U+0083><U+0087>a<U+0082>￡a<U+0082>?

a<U+009B>，a?<U+008F>
       vim [options] [file ..]
       vim [options] -
       vim [options] -t tag
       vim [options] -q [errorfile]

       ex
       view
       gvim gview evim eview
       rvim rview rgvim rgview

ea￢a<U+0098><U+008E>
       Vim         a<U+0081>￣         Vi         ao<U+0092>a<U+008F><U+009B>a<U+0081>Ra<U+0083><U+0086>a<U+0082>a<U+0082>1a<U+0083><U+0088>a<U+0082>¨a<U+0083><U+0087>a
<U+0082>￡a<U+0082>?a<U+0081>§a<U+0081><U+0099>a<U+0080><U+0082>


Expected results:

Displayed as Japanese.

VIM(1)                        General Commands Manual                        VIM(1)

名前
       vim - Vi IMproved, プログラマのテキストエディタ

書式
       vim [options] [file ..]
       vim [options] -
       vim [options] -t tag
       vim [options] -q [errorfile]

       ex
       view
       gvim gview evim eview
       rvim rview rgvim rgview

説明
       Vim  は Vi 互換のテキストエディタです。 どのような種類のプレインテキストでも
       編集できます。 特に、プログラムの編集に力を発揮します。


Additional info:

In the progress of building the vim-common rpm packages, there is a process of converting the document files included in the Vim upstream source code into UTF-8.
showing below lines of 513 to 521 in vim.spec.

 513 ( cd %{buildroot}/%{_mandir}
 514   for i in `find ??/ -type f`; do
 515     if [[ "`file $i`" == *UTF-8\ Unicode\ text* ]]; then
 516       continue
 517     fi
 518     bi=`basename $i`
 519     iconv -f latin1 -t UTF8 $i > %{buildroot}/$bi
 520     mv -f %{buildroot}/$bi $i
 521   done
 522 )


In executing file command with 'runtime/doc/vim-*.UTF-8.1' included by Vim source, I got the following result.

[iwatam@FedoraPi01 vim81]$ file  runtime/doc/vim-*.UTF-8.1
runtime/doc/vim-de.UTF-8.1: troff or preprocessor input, UTF-8 Unicode text
runtime/doc/vim-fr.UTF-8.1: troff or preprocessor input, UTF-8 Unicode text
runtime/doc/vim-it.UTF-8.1: troff or preprocessor input, UTF-8 Unicode text
runtime/doc/vim-ja.UTF-8.1: DIY-Thermocam raw data (Lepton 2.x), scale 58241-43747, spot sensor temperature -0.000000, color scheme 190, minimum point enabled, maximum point enabled, calibration: offset 0.000000, slope 155727473974181888.000000
runtime/doc/vim-pl.UTF-8.1: troff or preprocessor input, UTF-8 Unicode text
runtime/doc/vim-ru.UTF-8.1: troff or preprocessor input, UTF-8 Unicode text
[iwatam@FedoraPi01 vim81]$

Only runtime/doc/vim-ja.UTF-8.1 is determined as 'DIY-Thermocam raw data'.
Probably, this is incorrect.


In line 515 of vim.spec, if file command determines as 'DIY-Thermocam raw data', not UTF-8 text,
Target file is converted as latin1 to UTF-8.
Actually, a part of build log is below.

+ for i in `find ??/ -type f`
++ file ja/man1/vim.1
+ [[ ja/man1/vim.1: DIY-Thermocam raw data (Lepton 2.x), scale 58241-43747, spot sensor temperature -0.000000, color scheme 190, minimum point enabled, maximum point enabled, calibration: offset 0.000000, slope 155727473974181888.000000 == *UTF-8\ Unicode\ text* ]]
++ basename ja/man1/vim.1
+ bi=vim.1
+ iconv -f latin1 -t UTF8 ja/man1/vim.1
+ mv -f /home/iwatam/rpmbuild/BUILDROOT/vim-8.1.020-1.fc28.arm/vim.1 ja/man1/vim.1


Then, I propose that the solution.
File command has a option '--exclude soft' for suppress file type determine with magic file.

[iwatam@FedoraPi01 vim81]$ file --exclude soft runtime/doc/vim-*.UTF-8.1
runtime/doc/vim-de.UTF-8.1: UTF-8 Unicode text
runtime/doc/vim-fr.UTF-8.1: UTF-8 Unicode text
runtime/doc/vim-it.UTF-8.1: UTF-8 Unicode text
runtime/doc/vim-ja.UTF-8.1: UTF-8 Unicode text
runtime/doc/vim-pl.UTF-8.1: UTF-8 Unicode text
runtime/doc/vim-ru.UTF-8.1: UTF-8 Unicode text
[iwatam@FedoraPi01 vim81]$


Diff of vim.spec and a part of option added build log is as follows.
In adding it, It looks like work well.

--- vim.spec.org        2018-05-23 21:12:13.000000000 +0900
+++ vim.spec    2018-05-27 13:31:34.018396545 +0900
@@ -512,7 +512,7 @@
 rm -f %{buildroot}/%{_datadir}/vim/%{vimdir}/tutor/tutor.gr.utf-8~
 ( cd %{buildroot}/%{_mandir}
   for i in `find ??/ -type f`; do
-    if [[ "`file $i`" == *UTF-8\ Unicode\ text* ]]; then
+    if [[ "`file --exclude soft $i`" == *UTF-8\ Unicode\ text* ]]; then
       continue
     fi
     bi=`basename $i`


+ for i in `find ??/ -type f`
++ file --exclude soft ja/man1/vimdiff.1
+ [[ ja/man1/vimdiff.1: UTF-8 Unicode text == *UTF-8\ Unicode\ text* ]]
+ continue