Commit 3c97b0f7 authored by Vincent Belaïche's avatar Vincent Belaïche
Browse files

Fix ses-delete-blanks to delete only blanks + documentation.

* doc/misc/ses.texi (Quick Tutorial): Mention the '!'
'ses-range' modifier as an alternative to 'ses+'.
(Advanced Features): Add a refernce to node 'Nonrelocatable
references' concerning function 'ses-rename-cell'.
(Standard formula functions): Mention the '!' 'ses-range'
modifier as an alternative to 'ses-delete-blanks'.
(More on cell printing): Fix fallback printer
definition.  Minor editorial formatting changes.
(Nonrelocatable references): Document the use of
'ses-rename-cell' as a better way to make cell reference
non-relocatable.
(The data area): Document the presence of local printer
definitions in the data area.

* lisp/ses.el (ses-delete-blanks): Do not remove
*error*.  Any error in an argument should propagate into the
using formula rather than being silently hidden !
parent 272391f1
......@@ -187,6 +187,14 @@ the end-points, e.g.:
(The @code{apply} is necessary because @code{ses-range} produces a
@emph{list} of values. This allows for more complex possibilities.)
Alternatively you can use the @code{!} modifier of @code{ses-range} to
remove blank cells which allows to use @code{+} instead of
@code{ses+}:
@lisp
(apply '+ (ses-range A2 A5 !))
@end lisp
@c ===================================================================
@node The Basics
......@@ -595,8 +603,8 @@ Pops up a menu to set the current row as the header, or revert to
column letters.
@item M-x ses-rename-cell
@findex ses-rename-cell
Rename a cell from a standard A1-like name to any
string.
Rename a cell from a standard A1-like name to any string that can be a
valid local variable name (See also @ref{Nonrelocatable references}).
@item M-x ses-repair-cell-reference-all
@findex ses-repair-cell-reference-all
When you interrupt a cell formula update by clicking @kbd{C-g}, then
......@@ -791,8 +799,17 @@ are some useful functions to call from your formulas:
@table @code
@item (ses-delete-blanks &rest @var{args})
Returns a list from which all blank cells (value is either @code{nil} or
'*skip*) have been deleted.
Returns a list from which all blank cells (value is either @code{nil}
or '*skip*) have been deleted. Order of args is reverted. Please note
that @code{ses-range} has a @code{!} modifier that allows to remove
blanks, so it is possible to write:
@lisp
(ses-range A1 A5 !)
@end lisp
instead of
@lisp
(apply 'ses-delete-blanks (ses-range A1 A5 <))
@end lisp
@item (ses+ &rest @var{args})
Sum of non-blank arguments.
......@@ -842,9 +859,9 @@ this to undo the effect of @kbd{t}.
@end table
When a printer function signals an error, the fallback printer
@samp{"%s"} is substituted. This is useful when your column printer
@samp{"%S"} is substituted. This is useful when your column printer
is numeric-only and you use a string as a cell value. Note that the
standard default printer is ``%.7g'' which is numeric-only, so cells
standard default printer is @samp{"%.7g"} which is numeric-only, so cells
that are empty of contain strings will use the fallback printer.
@kbd{c} on such cells will display ``Format specifier doesn't match
argument type''.
......@@ -986,7 +1003,18 @@ can type ahead without worrying about the glitch.
@kbd{C-u C-y} relocates none of the cell-references. What about mixed
cases?
You can use
The best way is to rename cells that you do not want to be relocatable
by using @code{ses-rename-cell}.
@findex ses-rename-cell
Cells that do not have an A1-like name style are not relocated on
yank. Using this method, the concerned cells won't be relocated
whatever formula they appear in. Please note however that when a
formula contains some range @code{(ses-range @var{cell1} @var{cell2})}
then in the yanked formula each range bound @var{cell1} and
@var{cell2} are relocated, or not, indepently, depending on whether
they are A1-like or renamed.
An alternative method is to use
@lisp
(symbol-value 'B3)
@end lisp
......@@ -994,7 +1022,8 @@ to make an @dfn{absolute reference}. The formula relocator skips over
quoted things, so this will not be relocated when pasted or when
rows/columns are inserted/deleted. However, B3 will not be recorded
as a dependency of this cell, so this cell will not be updated
automatically when B3 is changed.
automatically when B3 is changed, this is why using
@code{ses-rename-cell} is most of the time preferable.
The variables @code{row} and @code{col} are dynamically bound while a
cell formula is being evaluated. You can use
......@@ -1011,12 +1040,13 @@ kind of dependency is also not recorded.
@findex ses-reconstruct-all
Begins with an 014 character, followed by sets of cell-definition
macros for each row, followed by column-widths, column-printers,
macros for each row, followed by the set of local printer
defintitions, followed by column-widths, column-printers,
default-printer, and header-row. Then there's the global parameters
(file-format ID, numrows, numcols) and the local variables (specifying
@acronym{SES} mode for the buffer, etc.).
(file-format ID, row count, column count, local printer count) and the
local variables (specifying @acronym{SES} mode for the buffer, etc.).
When a @acronym{SES} file is loaded, first the numrows and numcols values are
When a @acronym{SES} file is loaded, first the global parameters are
loaded, then the entire data area is @code{eval}ed, and finally the local
variables are processed.
......
;;; ses.el -- Simple Emacs Spreadsheet -*- lexical-binding:t -*-
;; Copyright (C) 2002-2016 Free Software Foundation, Inc.
......@@ -3746,7 +3747,7 @@ Use `math-format-value' as a printer for Calc objects."
"Return ARGS reversed, with the blank elements (nil and *skip*) removed."
(let (result)
(dolist (cur args)
(unless (memq cur '(nil *skip* *error*))
(unless (memq cur '(nil *skip*))
(push cur result)))
result))
......
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