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Document print-escape-control-characters

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* doc/lispref/streams.texi, etc/NEWS: Add doc.
This commit is contained in:
Paul Eggert 2018-02-27 20:13:00 -08:00
parent c00fea918e
commit 5e69219fda
2 changed files with 14 additions and 3 deletions
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7
doc/lispref/streams.texi
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@ -778,6 +778,13 @@ In the second expression, the local binding of
@code{prin1}, but not during the printing of the result. @code{prin1}, but not during the printing of the result.
@end defvar @end defvar
@defvar print-escape-control-characters
If this variable is non-@code{nil}, control characters in strings are
printed as backslash sequences by the print functions @code{prin1} and
@code{print} that print with quoting. If this variable and
@code{print-escape-newlines} are both non-@code{nil}, the latter takes
precedences for newlines and formfeeds.
@defvar print-escape-nonascii @defvar print-escape-nonascii
If this variable is non-@code{nil}, then unibyte non-@acronym{ASCII} If this variable is non-@code{nil}, then unibyte non-@acronym{ASCII}
characters in strings are unconditionally printed as backslash sequences characters in strings are unconditionally printed as backslash sequences

10
etc/NEWS
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@ -1219,7 +1219,7 @@ backend", which has been updated to benefit from the new UI features.
** Term ** Term
--- ---
*** `term-char-mode' now makes its buffer read-only. *** 'term-char-mode' now makes its buffer read-only.
The buffer is made read-only to prevent changes from being made by The buffer is made read-only to prevent changes from being made by
anything other than the process filter; and movements of point away anything other than the process filter; and movements of point away
@ -1228,8 +1228,8 @@ correct position after each command. This is needed to avoid states
which are inconsistent with the state of the terminal understood by which are inconsistent with the state of the terminal understood by
the inferior process. the inferior process.
New user options `term-char-mode-buffer-read-only' and New user options 'term-char-mode-buffer-read-only' and
`term-char-mode-point-at-process-mark' control these behaviors, and 'term-char-mode-point-at-process-mark' control these behaviors, and
are non-nil by default. Customize these options to nil if you want are non-nil by default. Customize these options to nil if you want
the previous behavior. the previous behavior.
@ -1746,6 +1746,10 @@ instead of 0.8, to avoid rounding glitches.
when a symbol's value is changed. This is used to implement the new when a symbol's value is changed. This is used to implement the new
debugger command 'debug-on-variable-change'. debugger command 'debug-on-variable-change'.
+++
** New variable 'print-escape-control-characters' causes 'prin1' and
'print' to output control characters as backslash sequences.
+++ +++
** Time conversion functions that accept a time zone rule argument now ** Time conversion functions that accept a time zone rule argument now
allow it to be OFFSET or a list (OFFSET ABBR), where the integer allow it to be OFFSET or a list (OFFSET ABBR), where the integer