Lugaru's Epsilon Programmer's Editor 14.04
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Epsilon User's Manual and Reference >
Primitives and EEL Subroutines >
Control Primitives >
Buffer-specific Variables
char use_default;
Epsilon's
buffer-specific variables have a value for each buffer. They change
when the current buffer changes. When you create a new buffer, you
also automatically create a new copy of each buffer-specific
variable. The initial value of each newly created buffer-specific
variable is set from special default values Epsilon maintains. These
values may be set using the variable use_default.
When use_default is nonzero,
referencing any buffer-specific variable accesses
its default value, not the value for the current buffer. Otherwise,
a value particular to the current buffer applies, as usual.
The normal way to reference a variable's default value is to use
the ".default" syntax described in Scope of Variables, not to
set use_default.
Window-specific variables have a separate value for each window.
When you split a window, the newly created window initially has the
same values for all variables as the original window. Each
window-specific variable also has a default value, which can be
referred to in the same way as buffer-specific variables, via the
".default" syntax described in Scope of Variables or by setting
the use_default variable. Epsilon uses the default value to
initialize the first window it creates, during startup, and when it
creates pop-up windows.
Only the default values of window- and buffer-specific variables are
saved in a state file.
copy_buffer_variables(int tobuf, int frombuf)
safe_copy_buffer_variables(int tobuf, int frombuf)
The copy_buffer_variables( ) primitive sets all
buffer-specific variables in the buffer tobuf to their values in
the buffer frombuf . If frombuf is zero, Epsilon resets all
buffer-specific variables in the buffer tobuf to their default
values. The safe_copy_buffer_variables( ) subroutine calls
copy_buffer_variables( ), then clears the values of certain
variables that should not be copied between buffers; generally these
variables are spot variables that must always refer to positions
within their own buffers.
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Epsilon Programmer's Editor 14.04 manual. Copyright (C) 1984, 2021 by Lugaru Software Ltd. All rights reserved.
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