File Format

While character set differences are the most obvious and pose the most challenge to portability, they affect nedit only indirectly via the same font and localization mechanisms common to all X applications. If your system is set up properly, you will probably never see character-set related problems in nedit. NEdit can not display Unicode text files, or any multi-byte character set.

The primary difference between an MS DOS format file and a Unix format file, is how the lines are terminated. Unix uses a single newline character. MS DOS uses a carriage-return and a newline. NEdit can read and write both file formats, but internally, it uses the single character Unix standard. NEdit auto-detects MS DOS format files based on the line termination at the start of the file. Files are judged to be DOS format if all of the first five line terminators, within a maximum range, are DOS-style. To change the format in which nedit writes a file from DOS to Unix or visa versa, use the Save As... command and check or un-check the MS DOS Format button.

Wrapping within text files can vary among individual users, as well as from system to system. Both Windows and MacOS make frequent use of plain text files with no implicit right margin. In these files, wrapping is determined by the tool which displays them. Files of this style also exist on Unix systems, despite the fact that they are not supported by all Unix utilities. To display this kind of file properly in NEdit, you have to select the wrap style called Continuous. Wrapping modes are discussed in the sections: Customizing /Preferences, and Basic Operation/Shifting and Filling.

The last and most minute of format differences is the terminating newline. NEdit, like vi and approximately half of Unix editors, enforces a final terminating newline on all of the files that it writes. NEdit does this because some Unix compilers and utilities require it, and fail in various ways on files which do not have it. Emacs does not enforce this rule. Users are divided on which is best.