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Use HORIZONTAL ELLIPSIS' when available in truncated-print'.

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* module/ice-9/pretty-print.scm (truncated-print): Set
  `%default-port-encoding' to the encoding of PORT.  Choose either
  U+2026 or "..." depending on PORT's encoding.

* test-suite/tests/print.test ("truncated-print")[tprint]: New ENCODING
  argument.  Update existing tests accordingly. Add UTF-8 tests.

* doc/ref/misc-modules.texi (Pretty Printing): Mention the possible use
  of U+2026.
This commit is contained in:
Ludovic Courtès 2010-01-08 10:57:32 +01:00
parent cc7005bc37
commit c5e05a1c70
3 changed files with 175 additions and 141 deletions
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8
doc/ref/misc-modules.texi
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@ -83,9 +83,11 @@ line in which to do so.
@print{} #<directory (gui...>
@end lisp
@code{truncated-print} will not output a trailing newline. If an
expression does not fit in the given width, it will be truncated --
possibly ellipsized, or in the worst case, displayed as @nicode{#}.
@code{truncated-print} will not output a trailing newline. If an expression does
not fit in the given width, it will be truncated -- possibly
ellipsized@footnote{On Unicode-capable ports, the ellipsis is represented by
character `HORIZONTAL ELLIPSIS' (U+2026), otherwise it is represented by three
dots.}, or in the worst case, displayed as @nicode{#}.
@deffn {Scheme Procedure} truncated-print obj [port] [keyword-options]
Print @var{obj}, truncating the output, if necessary, to make it fit