Package: bzip2
Version: 1.0.8-6
Severity: minor
Tags: patch
* What led up to the situation?
Checking for defects with
test-[g|n]roff -mandoc -t -K utf8 -rF0 -rHY=0 -ww -b -z < "man page"
[Use "groff -e ' $' <file>" to find trailing spaces.]
["test-groff" is a script in the repository for "groff"; is not shipped]
(local copy and "troff" slightly changed by me).
[The fate of "test-nroff" was decided in groff bug #55941.]
* What was the outcome of this action?
troff: backtrace: file '<stdin>':16
troff:<stdin>:16: warning: trailing space in the line
troff: backtrace: file '<stdin>':35
troff:<stdin>:35: warning: trailing space in the line
* What outcome did you expect instead?
No output (no warnings).
-.-
General remarks and further material, if a diff-file exist, are in the
attachments.
-- System Information:
Debian Release: trixie/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 6.11.10-amd64 (SMP w/2 CPU threads; PREEMPT)
Locale: LANG=is_IS.iso88591, LC_CTYPE=is_IS.iso88591 (charmap=ISO-8859-1),
LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: sysvinit (via /sbin/init)
Versions of packages bzip2 depends on:
ii libbz2-1.0 1.0.8-6
ii libc6 2.40-3
bzip2 recommends no packages.
Versions of packages bzip2 suggests:
pn bzip2-doc <none>
-- no debconf information
Input file is bzdiff.1
Any program (person), that produces man pages, should check the output
for defects by using (both groff and nroff)
[gn]roff -mandoc -t -ww -b -z -K utf8 <man page>
The same goes for man pages that are used as an input.
For a style guide use
mandoc -T lint
-.-
So any 'generator' should check its products with the above mentioned
'groff', 'mandoc', and additionally with 'nroff ...'.
This is just a simple quality control measure.
The 'generator' may have to be corrected to get a better man page,
the source file may, and any additional file may.
Common defects:
Input text line longer than 80 bytes.
Not removing trailing spaces (in in- and output).
The reason for these trailing spaces should be found and eliminated.
Not beginning each input sentence on a new line.
Lines should thus be shorter.
See man-pages(7), item 'semantic newline'.
-.-
The difference between the formatted output of the original and patched file
can be seen with:
nroff -mandoc <file1> > <out1>
nroff -mandoc <file2> > <out2>
diff -u <out1> <out2>
and for groff, using
"printf '%s\n%s\n' '.kern 0' '.ss 12 0' | groff -mandoc -Z - "
instead of 'nroff -mandoc'
Add the option '-t', if the file contains a table.
Read the output of 'diff -u' with 'less -R' or similar.
-.-.
If 'man' (man-db) is used to check the manual for warnings,
the following must be set:
The option "-warnings=w"
The environmental variable:
export MAN_KEEP_STDERR=yes (or any non-empty value)
or
(produce only warnings):
export MANROFFOPT="-ww -b -z"
export MAN_KEEP_STDERR=yes (or any non-empty value)
-.-.
Output from "mandoc -T lint bzdiff.1 ": (shortened list)
1 missing date, using ""
2 whitespace at end of input line
-.-.
Output from "test-groff -mandoc -t -ww -b -z bzdiff.1 ": (shortened list)
2 trailing space in the line
-.-.
Output from "mandoc -T lint bzdiff.1 ":
mandoc: bzdiff.1:3:2: WARNING: missing date, using "": TH
mandoc: bzdiff.1:16:4: STYLE: whitespace at end of input line
mandoc: bzdiff.1:35:21: STYLE: whitespace at end of input line
-.-.
Remove space characters at the end of lines.
Use "git apply ... --whitespace=fix" to fix extra space issues, or use
global configuration "core.whitespace".
16:and
35:The exit status from
-.-.
Name of a manual is set in bold, the section in roman.
See man-pages(7).
41:cmp(1), diff(1), bzmore(1), bzless(1), bzgrep(1), bzip2(1)
-.-.
Two or more space charaters between printable characters.
When the distance is between sentences,
start the beginning of the second one on a separate line
("semantic newline", see man-pages(7)).
15:.I Bzcmp
22:program on bzip2 compressed files. All options specified are passed
-.-.
Output from "test-groff -mandoc -t -K utf8 -rF0 -rHY=0 -ww -b -z ":
troff: backtrace: file '<stdin>':16
troff:<stdin>:16: warning: trailing space in the line
troff: backtrace: file '<stdin>':35
troff:<stdin>:35: warning: trailing space in the line
--- bzdiff.1 2024-12-04 06:49:14.423883921 +0000
+++ bzdiff.1.new 2024-12-04 07:00:52.817582538 +0000
@@ -1,47 +1,48 @@
\"Shamelessly copied from zmore.1 by Philippe Troin <p...@fifi.org>
\"for Debian GNU/Linux
-.TH BZDIFF 1
+.TH BZDIFF 1 ""\" Date is missing
.SH NAME
bzcmp, bzdiff \- compare bzip2 compressed files
.SH SYNOPSIS
.B bzcmp
-[ cmp_options ] file1
-[ file2 ]
+.RI "[ " cmp_options " ] " file1 \
+" [ " file2 " ]"
.br
.B bzdiff
-[ diff_options ] file1
-[ file2 ]
+.RI "[ " diff_options " ] " file1 \
+" [ " file2 " ]"
.SH DESCRIPTION
-.I Bzcmp
-and
-.I bzdiff
+.B Bzcmp
+and
+.B bzdiff
are used to invoke the
-.I cmp
+.B cmp
or the
-.I diff
-program on bzip2 compressed files. All options specified are passed
-directly to
-.I cmp
+.B diff
+program on bzip2 compressed files.
+All options specified are passed directly to
+.B cmp
or
-.IR diff "."
+.BR diff "."
If only 1 file is specified, then the files compared are
.I file1
and an uncompressed
.IR file1 ".bz2."
If two files are specified, then they are uncompressed if necessary and fed to
-.I cmp
+.B cmp
or
-.IR diff "."
-The exit status from
-.I cmp
+.BR diff "."
+The exit status from
+.B cmp
or
-.I diff
+.B diff
is preserved.
.SH "SEE ALSO"
-cmp(1), diff(1), bzmore(1), bzless(1), bzgrep(1), bzip2(1)
+.BR cmp "(1), " diff "(1), " bzmore "(1), " bzless "(1), " bzgrep "(1), " \
+bzip2 (1)
.SH BUGS
Messages from the
-.I cmp
+.B cmp
or
-.I diff
+.B diff
programs refer to temporary filenames instead of those specified.
