Node:FAQ, Next:Command Index, Previous:Conflicts and bugs, Up:Top
This is the Emacs Code Browser FAQ.
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Answer
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| What is the first step i should do if i have problems with ECB? |
Read carefully the related sections of the online-help of ECB.
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| What should i do, if a have a problem which can not be solved even after reading the online-help? |
Send a problem-report to the ECB-mailing-list with the command
ecb-submit-problem-report.
See Submitting problem report.
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| What should i do, if another package seems not to work correct with ECB? |
Take a look into Conflicts. If your package is not listed there
then submit a problem-report.
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| Can ECB parse and display source-contents not supported by semantic? |
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 Non-semantic sources.
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| Why are the lines in the ECB-, temp- and compilation-buffers not wrapped but truncated? |
Check the variable truncate-partial-width-windows and set it to
nil.
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| Why doesn't ECB work correct with VC? |
The variable vc-delete-logbuf-window must be set to nil during
active ECB. This can be done with the hooks of ECB.
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| Does ECB support C++ as well as Java? |
This depends strongly on the used semantic-version, but all
semantic-versions >= semantic-1.4.3 support C++ really well.
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| Does ECB support Perl? |
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.
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| Does ECB support language XYZ? |
See question "Does ECB support Perl?" and replace "Perl" with
"XYZ" in the answer.
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| How to add new languages to ECB? |
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.
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| Why does ECB not recognize my source-files for C++? |
Your C++-files have probably an extension which is not mapped to
c++-mode in auto-mode-alist and/or your own Emacs-setup has
"destroyed" the correct value of the hook-variable
c++-mode-hook.
See Setting up Emacs.
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| Why doesn't ECB display the node name in the echo area if mouse moves over it? |
There can be several reasons: First the value of the option
ecb-show-node-name-in-minibuffer must be either always or
if-too-long. 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 ecb-activate-hook! But with
Emacs 21.X and XEmacs there are no problems with this feature, just
activate it.
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| Is it possible to make the history of ECB persistent? |
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.
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| Is there an "Intellisense"-mechanism like with other IDEs? |
For Java the JDEE1 has this feature and for all other languages
semantic offer something similar, see
http://cedet.sourceforge.net/intellisense.shtml
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| Can i use ECB in combination with Gnus within one frame? |
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 Window-managers and ECB.
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| Can i speed up displaying the contents of big-size directories? |
Yes, see the option ecb-cache-directory-contents. Read the
section
Large directories.
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| Is it possible to create/use other layouts than the built-in ones? |
Yes. Creating a new ECB-layout and
The layout-engine are the relevant sections. The former one
describes how to create interactively new layouts where the latter
one is for Elisp-programmers.
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| Can i use speedbar as directory-browser within ECB? |
Yes, see Integrating speedbar.
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| Can i exclude subdirectories from the recursive grep in the directories buffer? |
Yes, see Grepping directories.
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How can i prevent contaminating each directory with a file semantic-cache?
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Set semanticdb-default-save-directory to a directory.
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| Why ECB displays large portions of current source-file with dark background? |
This comes from semantic;
see Setting up Emacs.
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| Why ECB underlines some parts of current source-file? |
This comes from semantic;
see Setting up Emacs.
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| Can i add my own commands to the popup-menus of tree-buffers? |
Yes, see Using the mouse.
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| Can ECB display the compile-window "on demand"? |
Yes, see Tips and tricks.
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| Which buffers are treated as compilation-buffers by ECB? |
See the docstring of the function ecb-compilation-buffer-p.
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| How can i change the modeline of an ECB-tree-buffer? |
You can change it with the options ecb-mode-line-prefixes,
ecb-mode-line-data and
ecb-mode-line-display-window-number.
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| Can the tree-buffers being selected faster than with the standard-keybindings of ECB? |
Yes, see option ecb-mode-line-display-window-number.
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| Can ECB display the window-number in the modeline of the special windows? |
Yes, see option ecb-mode-line-display-window-number.
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| How can i change the keybindings of ECB? |
You can do this with option ecb-key-map (see ecb-general).
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| What can i do if hiding/showing from the methods-buffer does not work? |
Either the current major-modes is not supported by hideshow or
you have to add an entry to hs-special-modes-alist
(see Hide-show).
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| Can i maximize one of the ECB-windows for better overlook? |
Yes, see Maximizing the ECB windows.
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| Can i hide the ECB-windows for getting more editing-space? |
Yes, see Hiding the ECB windows.
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| Can i define the actions ECB performs after visiting a tag? |
Yes, see Visiting tags.
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| Buffers are not displayed correctly in the compile-window? |
See Problems with the compile window.
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| Can ECB work together with window-managers like escreen.el? |
Yes, see Window-managers and ECB.
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| Can i remove these "ugly" vertical lines from a tree-buffer? |
Yes, see option ecb-tree-buffer-style.
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| ECB does not display images in the tree-buffers - what can i do? |
Customize ecb-tree-buffer-style 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
ecb-tree-buffer-style.
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Do special-display-function et. al. work with ECB.
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Yes, see
Using special-display with ECB.
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| Can i activate the popup-menu of a tree-buffer from keyboard? |
Yes, see Using popup-menus.
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| Can i display the popup-menu of a tree-buffer with tmm? |
Yes, see Using popup-menus.
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| Does ECB disable all advices after deactivation? |
"Nes"2, see remarks
in the documentation of the option
ecb-split-edit-window-after-start.
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| Can ECB preserve the full state of ECB between deactivation and next activation? |
Yes, see the option ecb-split-edit-window-after-start.
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| Can i change the behavior how ECB chooses another window for selecting it or scrolling it. |
Yes, see The other window.
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| Can i increase the allowed depth of nested submenus. |
Yes, see the docstring of the option
ecb-directories-menu-user-extension.
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| Can i apply some filters to the Tree-buffers. |
Yes, see Filtering the tree-buffers
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| With XEmacs i get sometimes an error "Wrong number of arguments: widen (1)". What can i do? |
Disable the func-menu support in your XEmacs-setup. See
Conflicts.
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| Can i use desktop.el in combination with ECB? |
Yes, see Conflicts.
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| Opening directories takes a long time - what can i do? |
Read Large directories.
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| ECB seems to be blocked sometimes - what is the reason? |
ECB performs some stealthy tasks when idle - this can cause sometimes
a blocked Emacs but this tasks will be immetiatelly interrupted by any
user-event so there should be normally no problems. But especially for
mounted net-drives some of the stealthy tasks can take time up to some
seconds for each file - and during one file-operation it can not be
interrupted. See also ecb-stealthy-tasks-delay.
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| Can i exclude certain directories from being checked for emptyness? |
Yes, see option ecb-prescan-directories-exclude-regexps.
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| Can i exclude certain directories from checking the VC-state of the contained sources? |
Yes, see option ecb-vc-directory-exclude-regexps.
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| Can i exclude certain directories from checking the read-only-state of the contained sources? |
Yes, see option ecb-read-only-check-exclude-regexps.
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ECB ignores the remote-paths i have added to ecb-source-path.
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Maybe you have to check the option ecb-ping-options. Ensure
that this option contains a value suitable for your ping-program (see
ecb-ping-program).
See also Remote directories.
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| ECB seems to be blocked a long time. |
Maybe you use cygwin-XEmacs. Then either the empty-dir-check (see
option ecb-prescan-directories-for-emptyness) or the VC-support
(see ecb-vc-enable-support) can block ECB.
For the latter one see Known VC-problems.
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| ECB seems to be blocked during the VC-state update in the tree-windows. |
Maybe the root repository for the current directory is a
remote-repository. This can result in a long lasting check-time per
file.
See also Version-control support for hints what you can do.
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| I have encountered some problems with the display of the VC-state in the tree-buffers. |
See also Version-control support for hints what you can do.
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I get errors when trying to download new ECB with
ecb-download-ecb.
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Ensure that the ECB-configuration of these tools is correct for your
system (see ecb-wget-setup, ecb-gzip-setup and
ecb-tar-setup).
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