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<html lang="en">
<head>
<title>ECB - the Emacs Code Browser</title>
<meta http-equiv="Content-Type" content="text/html">
<meta name=description content="ECB - the Emacs Code Browser">
<meta name=generator content="makeinfo 4.2">
<link href="http://www.gnu.org/software/texinfo/" rel=generator-home>
</head>
<body>
<p>
Node:<a name="FAQ">FAQ</a>,
Next:<a rel=next accesskey=n href="Command-Index.html#Command%20Index">Command Index</a>,
Previous:<a rel=previous accesskey=p href="Conflicts-and-bugs.html#Conflicts%20and%20bugs">Conflicts and bugs</a>,
Up:<a rel=up accesskey=u href="ecb.html#Top">Top</a>
<hr><br>
<h2>Frequently asked questions</h2>
<p>This is the Emacs Code Browser FAQ.
<p><table>
<tr align="left"><td valign="top"><strong>Question</strong>
</td><td valign="top"></td><td valign="top">
<strong>Answer</strong>
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">What is the first step i should do if i have problems with ECB?
</td><td valign="top"></td><td valign="top">
Read carefully the related sections of the online-help of ECB.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">What should i do, if a have a problem which can not be solved even
after reading the online-help?
</td><td valign="top"></td><td valign="top">
Send a problem-report to the ECB-mailing-list with the command
<code>ecb-submit-problem-report</code>.
See <a href="Submitting-problem-report.html#Submitting%20problem%20report">Submitting problem report</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">What should i do, if another package seems not to work correct with
ECB?
</td><td valign="top"></td><td valign="top">
Take a look into <a href="Conflicts.html#Conflicts">Conflicts</a>. If your package is not listed there
then submit a problem-report.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can ECB parse and display source-contents not supported by semantic?
</td><td valign="top"></td><td valign="top">
Yes, in all version >= 1.94. ECB can now parse and display all
source-contents supported by semantic, imenu or etags - same as
speedbar. See <a href="Non-semantic-sources.html#Non-semantic%20sources">Non-semantic sources</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Why are the lines in the ECB-, temp- and compilation-buffers not
wrapped but truncated?
</td><td valign="top"></td><td valign="top">
Check the variable <code>truncate-partial-width-windows</code> and set it to
nil.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Why doesn't ECB work correct with VC?
</td><td valign="top"></td><td valign="top">
The variable <code>vc-delete-logbuf-window</code> must be set to nil during
active ECB. This can be done with the hooks of ECB.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Does ECB support C++ as well as Java?
</td><td valign="top"></td><td valign="top">
This depends strongly on the used semantic-version, but all
semantic-versions >= semantic-1.4.3 support C++ really well.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Does ECB support Perl?
</td><td valign="top"></td><td valign="top">
If perl can be parsed either by imenu, etags or semantic then ECB
supports perl. Of course ECB would support perl best if perl is
supported by semantic.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Does ECB support language XYZ?
</td><td valign="top"></td><td valign="top">
See question "Does ECB support Perl?" and replace "Perl" with
"XYZ" in the answer.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">How to add new languages to ECB?
</td><td valign="top"></td><td valign="top">
Add the language XYZ to semantic (perform all necessary steps described in
the semantic-manual) and ECB will automatically support language XYZ!
There is nothing to do in ECB itself! Same when you write an imenu- or
etags-support for language XYZ.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Why does ECB not recognize my source-files for C++?
</td><td valign="top"></td><td valign="top">
Your C++-files have probably an extension which is not mapped to
c++-mode in <code>auto-mode-alist</code> and/or your own Emacs-setup has
"destroyed" the correct value of the hook-variable
<code>c++-mode-hook</code>.
See <a href="Setting-up-Emacs.html#Setting%20up%20Emacs">Setting up Emacs</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Why doesn't ECB display the node name in the echo area if mouse moves
over it?
</td><td valign="top"></td><td valign="top">
There can be several reasons: First the value of the option
<code>ecb-show-node-name-in-minibuffer</code> must be either <code>always</code> or
<code>if-too-long</code>. If this is OK, then maybe you have turned on
follow-mouse AFTER activating ECB; follow-mouse must be turned on
BEFORE ECB is activated, e.g. in the <code>ecb-activate-hook</code>! But with
Emacs 21.X and XEmacs there are no problems with this feature, just
activate it.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">What is the reason for poor scrolling performance with GNU Emacs 20.X
in the edit-windows and what can i do?
</td><td valign="top"></td><td valign="top">
Set <code>scroll-conservatively</code> to 0 and <code>scroll-step</code> to a
value > 1. For the exact reason look at
<a href="Optimize-scrolling.html#Optimize%20scrolling">Optimize scrolling</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Is it possible to make the history of ECB persistent?
</td><td valign="top"></td><td valign="top">
You can use the library "desktop.el" which works very well with ECB.
Then all files of your recent Emacs-session will be opened
automatically after next Emacs-start and will be added automatically
to the ECB-history after ECB-start.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Is there an "Intellisense"-mechanism like with other IDEs?
</td><td valign="top"></td><td valign="top">
For Java the JDEE<a rel=footnote href="#fn-1"><sup>1</sup></a> has this feature and for all other languages
semantic offer something similar, see
<a href="http://cedet.sourceforge.net/intellisense.shtml">http://cedet.sourceforge.net/intellisense.shtml</a>
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i use ECB in combination with Gnus within one frame?
</td><td valign="top"></td><td valign="top">
You can, but for ECB-versions < 1.96 it is not recommended because
each of them has it's own window-management and probably there will be
conflicts, so use different frames for ECB and Gnus! But beginning
with ECB 1.96 you can use either escreen.el or winring.el as
"window-manager" which allows you in consequence to use ECB and
applications like Gnus in one frame!
See <a href="Window-managers-and-ECB.html#Window-managers%20and%20ECB">Window-managers and ECB</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i speed up displaying the contents of big-size directories?
</td><td valign="top"></td><td valign="top">
Yes, see the option <code>ecb-cache-directory-contents</code>. Read the
section
<a href="Large-directories.html#Large%20directories">Large directories</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Is it possible to create/use other layouts than the built-in ones?
</td><td valign="top"></td><td valign="top">
Yes. <a href="Creating-a-new-ECB-layout.html#Creating%20a%20new%20ECB-layout">Creating a new ECB-layout</a> and
<a href="The-layout-engine.html#The%20layout-engine">The layout-engine</a> are the relevant sections. The former one
describes how to create interactively new layouts where the latter
one is for Elisp-programmers.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i use speedbar as directory-browser within ECB?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Integrating-speedbar.html#Integrating%20speedbar">Integrating speedbar</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i exclude subdirectories from the recursive grep in the directories buffer?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Grepping-directories.html#Grepping%20directories">Grepping directories</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">How can i prevent contaminating each directory with a file <code>semantic-cache</code>?
</td><td valign="top"></td><td valign="top">
Set <code>semanticdb-default-save-directory</code> to a directory.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Why ECB displays large portions of current source-file with dark background?
</td><td valign="top"></td><td valign="top">
This comes from semantic;
see <a href="Setting-up-Emacs.html#Setting%20up%20Emacs">Setting up Emacs</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Why ECB underlines some parts of current source-file?
</td><td valign="top"></td><td valign="top">
This comes from semantic;
see <a href="Setting-up-Emacs.html#Setting%20up%20Emacs">Setting up Emacs</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i add my own commands to the popup-menus of tree-buffers?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Using-the-mouse.html#Using%20the%20mouse">Using the mouse</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can ECB display the compile-window "on demand"?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Tips-and-tricks.html#Tips%20and%20tricks">Tips and tricks</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Which buffers are treated as compilation-buffers by ECB?
</td><td valign="top"></td><td valign="top">
See the docstring of the function <code>ecb-compilation-buffer-p</code>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">How can i change the modeline of an ECB-tree-buffer?
</td><td valign="top"></td><td valign="top">
You can change it with the options <code>ecb-mode-line-prefixes</code>,
<code>ecb-mode-line-data</code> and
<code>ecb-mode-line-display-window-number</code>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can the tree-buffers being selected faster than with the
standard-keybindings of ECB?
</td><td valign="top"></td><td valign="top">
Yes, see option <code>ecb-mode-line-display-window-number</code>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can ECB display the window-number in the modeline of the special windows?
</td><td valign="top"></td><td valign="top">
Yes, see option <code>ecb-mode-line-display-window-number</code>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">How can i change the keybindings of ECB?
</td><td valign="top"></td><td valign="top">
You can do this with option <code>ecb-key-map</code> (see <a href="ecb-general.html#ecb-general">ecb-general</a>).
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">What can i do if hiding/showing from the methods-buffer does not work?
</td><td valign="top"></td><td valign="top">
Either the current <code>major-modes</code> is not supported by hideshow or
you have to add an entry to <code>hs-special-modes-alist</code>
(see <a href="Hide-show.html#Hide-show">Hide-show</a>).
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i maximize one of the ECB-windows for better overlook?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Maximizing-the-ECB-windows.html#Maximizing%20the%20ECB%20windows">Maximizing the ECB windows</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i hide the ECB-windows for getting more editing-space?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Hiding-the-ECB-windows.html#Hiding%20the%20ECB%20windows">Hiding the ECB windows</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i define the actions ECB performs after visiting a tag?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Visiting-tags.html#Visiting%20tags">Visiting tags</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Buffers are not displayed correctly in the compile-window?
</td><td valign="top"></td><td valign="top">
See <a href="Problems-with-the-compile-window.html#Problems%20with%20the%20compile%20window">Problems with the compile window</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can ECB work together with window-managers like escreen.el?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Window-managers-and-ECB.html#Window-managers%20and%20ECB">Window-managers and ECB</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i remove these "ugly" vertical lines from a tree-buffer?
</td><td valign="top"></td><td valign="top">
Yes, see option <code>ecb-tree-buffer-style</code>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">ECB does not display images in the tree-buffers - what can i do?
</td><td valign="top"></td><td valign="top">
Customize <code>ecb-tree-buffer-style</code> and restart ECB. But note: GNU
Emacs <= 21.3.X for Windows does not support image-display so ECB uses
always ascii-guide-lines even when here the image-style is set in
<code>ecb-tree-buffer-style</code>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Do <code>special-display-function</code> et. al. work with ECB.
</td><td valign="top"></td><td valign="top">
Yes, see
<a href="Using-special-display-with-ECB.html#Using%20special-display%20with%20ECB">Using special-display with ECB</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i activate the popup-menu of a tree-buffer from keyboard?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Using-popup-menus.html#Using%20popup-menus">Using popup-menus</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i display the popup-menu of a tree-buffer with tmm?
</td><td valign="top"></td><td valign="top">
Yes, see <a href="Using-popup-menus.html#Using%20popup-menus">Using popup-menus</a>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Does ECB disable all advices after deactivation?
</td><td valign="top"></td><td valign="top">
"Nes"<a rel=footnote href="#fn-2"><sup>2</sup></a>, see remarks
in the documentation of the option
<code>ecb-split-edit-window-after-start</code>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can ECB preserve the full state of ECB between deactivation and next
activation?
</td><td valign="top"></td><td valign="top">
Yes, see the option <code>ecb-split-edit-window-after-start</code>.
<br></td></tr><tr align="left"><td valign="top"></td><td valign="top"></td><td valign="top">
<br></td></tr><tr align="left"><td valign="top">Can i change the behavior how ECB chooses another window for selecting
it or scrolling it.
</td><td valign="top"></td><td valign="top">
Yes, see <a href="The-other-window.html#The%20other%20window">The other window</a>.
<br></td></tr></table>
<hr><h4>Footnotes</h4>
<ol type="1">
<li><a name="fn-1"></a>
<p>
<a href="http://jdee.sunsite.dk/">http://jdee.sunsite.dk/</a>
</p>
<li><a name="fn-2"></a>
<p>Nes is a combination of No and Yes :-)</p>
</ol><hr>
</body></html>
|