sgmldiff - Find differences in the markup of two SGML files
sgmldiff [ options ... ] file1 file2 [ -a | --attributes
| -c [ attributes | nesting | textpos ] | --context [ attributes
| nesting | textpos ]
| -s | --statistics
| -h | --help
| -v | --version ]
This perl script allows to determine the structural differences between
two SGML files. It compares the files, regardless of what is in between
the tags, to only focus on the markup. Its output is similar to
The typical use of sgmldiff is to compare an SGML file with its trans-
lation into another language. If the translation was done cleanly,
sgmldiff returns without finding any difference in the markup.
An example of a typical call to sgmldiff is:
sgmldiff english.sgml italiano.sgml
If there are differences in markup between both files, sgmldiff will
output a series of differences reports summarized with lines of the
At line 169 of the first file, line 164 of the second file has
At line 8 of the first file, lines 12 to 15 of the second file
have been added.
41d28 Line 41 of the first file has been destroyed, to obtain line 28
of the second file.
Lines 63 to 66 of the first file have been destroyed. to obtain
line 61 of the second file.
52c51 Line 52 of the first file has been changed into line 51 of the
Lines 5 to 7 of the first file have been changed into lines 8 to
10 of the second line. In addition to those summaries, the
lines of the first file are shown preceeded by '<' and the lines
of the second file are shown preceeded by '>".
Here is the list of actions that can be requested to sgmldiff:
[ -a | --attributes ]
Include the attribute values in the difference tests. Don't set
this value if the attributes are likely to be translated. Set
this value if the attributes value shouldn't change between both
files. Default is to don't include the attributes in the differ-
[ -c [ attributes | nesting | textpos ] | --context [
attributes | nesting | textpos ] ]
Add more context to the difference. Since every test between the
tags is removed before testing the differences, sgmldiff is
likely to resynchronize itself at the wrong place, by thinking
the location in both files correspond, while it's not true. By
adding more context to the compared area, such risk is dismin-
The allowed values for the --context option are:
Take into account the attribute names. The attribute val-
ues are controlled by the attributes option.
Take into account the nesting level of all the compared
Take into account the position in the text.
[ -s | --statistics ]
Print some SGML information at the end.
[ -h | --help ]
Print a short help message and exit
[ -v | --version ]
Print the version identifier and exit
Developer of sgmldiff.
conversion from a SGML file to other file formats
a base component of OpenJade DSSSL engine
the home page of the DocBook tools, a compendium of all tools
necessary to process DocBook files, including the DocBook-utils
05 August 2016 SGMLDIFF(1)
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