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bvi in Action using spring framework toembed pdf417 with asp.net web,windows application Beaware of Malicious QR Codes The Text Editor this interface woul d find its way into some clones. You can find the WordStar interface provided by the Joe text editor. Joe is an interesting editor because it can change its behavior to be an Emacs clone or a clone of another editor called Pico, which brings us to next popular interface.

Pico was part of the very popular Pine email client, which was available on UNIX systems before the era of Web browsers. As part of an email client you might guess that Pico is easy to use, and it is. Many users came to be comfortable with it, although it lacks many features required for programming.

Nevertheless, programmers use it. You can get the original source for Pine from the University of Washington10 or you can get the GNU clone called Nano. GNU cloned Pico because the Free Software Foundation determined that the source license for Pico was not compatible with the GPL.

Nano follows the same interface as Pico and adds several enhancements. Some popular clones are listed in Table 4-27. With the exception of Vim, all these clones run exclusively in text mode (there is no GUI).

I will look at some GUI text editors in the next section. Table 4-28 presents a summary of available features in each clone. The list of features comes from Table 4-2.

. TABLE 4-27 Some Popular Editor Clones Editor Name Vim Joe Emulates Notes Adds many enh ancements to vi. Emulation is selected by the command name. The and jstar commands emulate WordStar; jmacs emulates Emacs; and jpico emulates Pico.

These commands point to the same executable.. Emacs, Pico, WordStar Zile Emacs Zile stands for Zil e Is Lossy Emacs. Zile does not have text menus, so it s probably better suited for experienced Emacs users. Emulation is selected in your .

jedrc file. Jed uses text menus that are the same in all modes, so it s suitable for beginners. GNU clone of the Pico text editor with enhancements.

. Emacs, WordStar, Others Pico Nano 10. www.washington.edu/pine 4 Editing and Maintaining Source Files TABLE 4-28. Editor Emulator Feature Summary Brace Matching Synt ax Highlighting Autocompletion Regular Expressions Automatic Code Indenting Browsing Code Building. Version Tested Vim Joe Zile Jed Nano 6.3.71 3.

1 2.2 0.99 PDF 417 for Java .

16 1.2.4-3.

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Later I look in dep th at one more feature that these editors bring to the table. All the clones use less memory than their predecessors, which is one reason why they are exclusively text based. A GUI by nature consumes more memory than a textbased editor.

But before I can discuss that topic, I need to take a closer look at the GUI editors.. Some GUI Text Editors at a Glance Emacs and Vim aside , what all GUI text editors have in common is that they are modeless. They can do this because the mouse and GUI are used for all features that don t involve typing. There is no shortage of GUI editors available.

The number of features each provides varies greatly. Some GUI editors are not intended for code development and don t have the features you would look for in a programmer s text editor. Others specifically target programmers.

In this section I look at the default editors provided with Gnome and KDE, as well as some other popular examples. There are many other fine editors including a couple written purely in Java. I chose not to include these, because most Linux distributions do not come with a Java installation.

If you have a Java installation, a Javabased editor may be worth looking at. An editor written in Java is attractive if you work in Windows and Linux, you can run the same editor in both environments. Because Java uses Unicode internally, you can expect to find excellent support for internationalization.

. The Text Editor Keep in mind that a ll these editors are constantly under development, so this is only a snapshot of the features available. 4.2.

7.1 Kate, Kwrite Kate is the featured text editor for the KDE environment and Kwrite is its light cousin. Both have all the features listed in Table 4-2 except code browsing.

One feature Kate have not covered before is folding allows you to hide sections of code or comments to cut down on clutter while you work. You can see how this works in Figure 4-4 and Figure 4-5. Kate has a plug-in mechanism to support additional features.

The autocompletion feature, for example, is available as a plug-in. Although Kwrite is supposed to be the light version of Kate, the only significant difference I have found is that Kate will open multiple files in the same window when you use tabs. By comparison, Kwrite will open one window for each file.

. FIGURE 4-4. Kate Editor Showing the Folding Controls (Unfolded).
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