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1995-02-09
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TIPS
FOR WORKING QUICKLY
WITH PREDITOR/2 2.0
___________________
PREDITOR/2 is packed with handy features designed to increase your
productivity. Here are some tips that the product's developers find most
useful when working with the editor.
___________________
Quick Loading
The initial loading of PREDITOR/2 may be slowed down if you store too
many options in the CPE.CFG file. Therefore, use the LOCAL.PEL file to
indicate options that are not likely to change often.
Online Examples
To learn more about configuring the CPE.CFG file, refer to the
EXAMPLE.CFG file in the CPE directory. (By default, this directory is
C:\CPE.)
Set Variables in the CPE.CFG File
Rather than changing the notebook settings each time you change your
work environments, you can create multiple CPE.CFG files (with
different names) pertaining to each environment.
Edit the CPE.CFG file directly to set variables. Once the CPE.CFG file
contains the variable settings you want to use as your defaults, create
a back-up copy so that you don't have to re-set your variables if you
happen to lose the file.
Before Debugging
To debug PEL functions, you must first compile the .AE file without the
-compress option. Make this change by editing the MAKE_AE.CMD file in
your PEL subdirectory. Then rename the file CPE.AE to CPE.BAK and
recompile the function library by running MAKE_AE.CMD.
Command and File Name Expansion
To expand a partial command or file name from the Command or File
prompt, press the tab key. If there is one matching name, it is
displayed at the prompt. If there are multiple matching names, a
dialog box is displayed listing possible matches you can select .
Open File Under Cursor
Quickly open a referenced file by executing the Open file under cursor
command from the File menu. When you select Open file under cursor, the
selected file is opened into a new buffer. Note: You can achieve the
same results by executing the open_file_under_cursor command from the
command dialog box.
Scroll Context
To increase the performance of scrolling when using the keyboard, set
your Scroll context variables on the Scroll vars page of the Windows
settings notebook.
Buffer Filter
The Buffer filter item on the Windows menu enables you to move
quickly between your loaded files. When you select Buffer
filter, a dialog box is displayed. Enter the type of file (for
example *.pel) that you want to filter through. You can then use
the Next buffer and Previous buffer commands to move through
your currently loaded files of that type.
Managing Swap File Size
It is possible for your swap file to become uncommonly large,
especially after performing large search and replace operations. To
keep your swap file at a reasonable size, occasionally save your work.
This is good practice, and clears all "undo" information out of the
swap file.
History Lists
1. Press UpArrow to scroll through history lists of search strings,
file names, or commands in the Search, Command, and Edit File dialog
boxes.
2. Press PageUp to scroll through history lists in Search, Command,
and Edit File dialog boxes (in all emulations other than CUA).
Tags File
A tags file is a data file that lists identifiers (function names,
variables, etc.) with information on where each is defined in the
source code.
Create tags files to help you quickly find information in your source
code. Once your tags file is built, you can use the tags() and
tags_auto() functions to retrieve the appropriate source file and
position the cursor at the definition. The tags() function prompts
for a symbol to locate and the tags_auto() function locates the symbol
under the cursor.
When you run ctags_make(), it will report the date that the tags file
was last updated, and will prompt you for the extensions of the files
you wish to parse. It only works on the files in the editor's current
directory, so you should use the 'chdir' command to change to the
directory containing your source files. After creating tags files
in your project directories, you can search them all by setting the
'Tags path' item on the Directories page of the settings notebook to
contain the list of directories to search for tags files.
Use the Error File
The Error file item on the File menu enables you to view errors
found after compiling, that were redirected to a file. Simply enter
information in the dialog boxes presented by the Error file command to
indicate the file name and compiler you are using. The Error file
generates a list box specific to this information, from which you can
double-click on a listed error to open a file with the cursor located
on that error.
Quickly Scanning Dialog Items
The PREDITOR/2 toolbar provides the ERR buttons to enable you to more
quickly flip through a list of matching search strings or compile errors
with the List dialog box minimized. The ERR buttons are located near the
right end of the toolbar.
When you have completed a search and the results are presented in the
Find All List dialog box or a compile with the results in a compile list
dialog box,
1. Minimize the List dialog box by clicking on the upper right corner
of the dialog box.
2. Click on the ERR buttons to move forward and backward through the
results list. Your cursor will automatically move to the next
occurrence found by the search process.
Context-Sensitive Search
Use the pop-up menu for a quick, context-sensitive search. Within the
buffer you are searching, simply move the cursor to the word you are
searching for, press and release the right mouse button, and select the
Find String menu item from the pop-up menu that appears.
Incremental Find
The Incremental find function enables you to follow the progress of the
search as you enter a search pattern.
For example, if you are searching for the pattern 'apple', the editor
finds the first occurrence of 'a' when you type 'a', then it finds the
first occurence of 'ap' when you typed 'p' and so on until you have
typed the entire pattern.
You can access incremental find from the Search menu on the menu bar.
The letters you enter appear on the Status bar. If your status bar is
toggled off, it is automatically toggled on for the incremental find
process. Use the Esc key to end the Incremental find command.
Context-Sensitive Help for Editor Commands
Press F1 at the command prompt to receive context-sensitive help on the
command name you have entered.
Wrap Paragraph Function
Paragraphs are delimited by empty lines. The wrap_paragraph
command reflows a paragraph at the margins. This is useful when
editing a text file that has different margins than those you
have specified. The wrap_paragraph command operates from the
current cursor position to the next empty line or on the current
selection.
Note: Before you execute wrap_paragraph, your text should be aligned
at the left margin.
It is often handy to reformat a paragraph after making
changes that don't cause an automatic update. By assigning a key
to the function wrap_paragraph(), you can press that key to
reformat the current paragraph from the cursor position to the
end of the paragraph. If you highlight one or more paragraphs
and press the key assigned to the wrap_paragraph() function, all
of the highlighted text is reformatted while paragraph
boundaries are honored.
It is also handy to quickly reformat a paragraph using margin
settings other than your standard settings. For example, you
might want to indent a list or chart. To do this, move the block
to the desired left margin then highlight the paragraph with a
column block, starting and ending at your desired margins, and
execute the wrap_paragraph() function.
Enabling PVCS
To enable PVCS, simply toggle it on by typing "PVCS" in the
command dialog box (or at the status bar prompt). Toggle PVCS
off by entering the same command.
Comparing without PVCS or Vdiff
If you do not have PVCS or Vdiff, you can still compare two
versions of a file with the compare_buffers() and
compare_windows() functions.
With these functions, you do not have to compare entire files.
In some cases, this characteristic makes compare_buffers() and
compare_windows() a quicker alternative than using Vdiff.
1. Compare Buffers
To use the compare_buffers() function, simply load both files
into consecutive buffers, place the cursor in each buffer at the
position where you would like to start the comparison, and call
the compare_buffers() function from the command line.
Note: When calling compare_buffers(), make sure you are in the
first of the two buffers in the list, as compare_buffers() simply
compares the current and next buffers, starting at their
respective cursor positions.
When the editor finds a difference, the cursor position in both
buffers is updated to that location. Cycling between buffers
enables you to see the differences between the two. If you wish
to continue comparing the buffers' remaining content, move the
cursor in each buffer to a new location and call the
compare_buffers() function again. If no differences are found,
the cursors are positioned at the end of the buffers.
2. Compare Windows
The compare_windows() function is a more visual version of the
compare_buffers() function. You must have two and only two
windows open, with the buffers to compare displayed in the
windows.
The easiest approach to using this function is to:
--load the files into buffers
--position the cursors
--choose Windows/Split vertical (or horizontal)
--call compare_windows()
Because both buffers are visible, you can view the differences
side-by-side. Otherwise, the functionality is the same as the
compare_buffers() function.
Create Windows
When in MDI mode, create a new window by simply pressing the left mouse
button in the main editor window, dragging the mouse to a diagonal
location and releasing the left mouse button.
Minimize_and_Save
Rather than exiting the editor and restarting each time you want
to edit a file, call the minimize_and_save() function to save all
your open buffers and minimize the editor. The editor appears to
be closed but is running in the background.
Users who habitually exit the editor rather than minimizing
frequently assign the minimize_and_save() function to the "Quit"
key in the emulations they use.
Prompts on the Status Bar
To receive command prompts from the status bar (rather than a
the Command dialog box), select the "Prompts" option on the
Editor Settings notebook Status bar page.
With the prompts "on," you can press the F10 key and the command
prompt appears on your status bar.
Note: This features is accessible in all emulations but CUA.
Enabling Template Expansion
Templates are programming constructs you can expand from an
abbreviated keyword, and are specific to a programming language.
By default, PREDITOR/2's templates are disabled.
To enable template expansion,
1. Click on the Tools menu on the menu bar.
2. Click on the Command dialog menu item.
3. Type ec in the text box and click on the OK button. (The
command ec toggles the template on and off.) The status bar
displays the state of template expansion.
4. Type the abbreviated keyword and press the space bar. The
construct corresponding to the keyword is displayed after the
cursor.
Many templates contain fields. After expansion, press the
Ctrl-Enter key to select the next field in the current buffer.
By default, the Expand Template key is Space and the Next Field
key is Ctrl+Enter. You can change these by modifying
ELECTRIC.PEL around line 77 (search for the string DEFAULT_)
and recompiling.
Determining Key Assignments
To determine what function is assigned to a key (or keys), use
the print_bindings command. After running print_bindings, any
key (or key combination) that you type will display the assigned
function on the status bar. Press the escape key to end the
print_bindings command.
To receive a list of all assigned keys, execute the list_keymap
command. Two optional parameters to the list_keymap command are
'pel' and 'cfg' which display the output in PEL or config file
format respectively.
Useful Functions to Assign to Keys
tags
tags_auto
peltags
peltags_auto
mark_matching
mark_matching_next
goto_matching
outdent_tab_maybe
indent_tab_maybe
upper
lower
outdent_columns
indent_columns
search_again
goto_bookmark 1-9
minimize_and_save