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[Emacs-diffs] master 52c3946: Make translation of quotes to curly in doc
From: |
Alan Mackenzie |
Subject: |
[Emacs-diffs] master 52c3946: Make translation of quotes to curly in doc strings optional. |
Date: |
Thu, 18 Jun 2015 21:09:18 +0000 |
branch: master
commit 52c3946c872c8bd96508f74cdda5cbb90c664306
Author: Alan Mackenzie <address@hidden>
Commit: Alan Mackenzie <address@hidden>
Make translation of quotes to curly in doc strings optional.
src/doc.c (traditional, prefer-unicode): new symbols.
(help-quote-translation): new variable.
(Fsubstitute_command_keys): make translation of quotes dependent on
`help-quote-translation'; also translate curly quotes back to ASCII
ones.
lisp/cus-start.el (top-level): Add a customization entry for
`help-quote-translation'.
---
lisp/cus-start.el | 9 ++++++++-
src/doc.c | 34 ++++++++++++++++++++++++++++++++--
2 files changed, 40 insertions(+), 3 deletions(-)
diff --git a/lisp/cus-start.el b/lisp/cus-start.el
index 8740f07..5dd3681 100644
--- a/lisp/cus-start.el
+++ b/lisp/cus-start.el
@@ -220,7 +220,14 @@ Leaving \"Default\" unchecked is equivalent with
specifying a default of
(visible-bell display boolean)
(no-redraw-on-reenter display boolean)
- ;; dosfns.c
+ ;; doc.c
+ (help-quote-translation help
+ (choice
+ (const :tag "No translation" nil)
+ (const :tag "Translate curly single
quotes to ASCII" traditional)
+ (const :tag "Translate ASCII single
quotes to curly" prefer-unicode)))
+
+ ;; dosfns.c
(dos-display-scancodes display boolean)
(dos-hyper-key keyboard integer)
(dos-super-key keyboard integer)
diff --git a/src/doc.c b/src/doc.c
index f1ba643..6794ec7 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -932,7 +932,8 @@ Otherwise, return a new string. */)
strp = SDATA (string) + idx;
}
}
- else if (strp[0] == '`')
+ else if ((Vhelp_quote_translation == Qprefer_unicode)
+ && (strp[0] == '`'))
{
in_quote = true;
start = (unsigned char *) "\xE2\x80\x98"; /* ‘ */
@@ -942,12 +943,27 @@ Otherwise, return a new string. */)
idx = strp - SDATA (string) + 1;
goto subst;
}
- else if (strp[0] == '\'' && in_quote)
+ else if ((Vhelp_quote_translation == Qprefer_unicode)
+ && (strp[0] == '\'' && in_quote))
{
in_quote = false;
start = (unsigned char *) "\xE2\x80\x99"; /* ’ */
goto subst_quote;
}
+
+ else if ((Vhelp_quote_translation == Qtraditional)
+ && (strp[0] == 0xE2)
+ && (strp[1] == 0x80)
+ && ((strp[2] == 0x98) /* curly opening quote */
+ || (strp[2] == 0x99))) /* curly closing quote */
+ {
+ start = (strp[2] == 0x98) ? "`" : "'";
+ length = 1;
+ length_byte = 1;
+ idx = strp - SDATA (string) + 3;
+ goto subst;
+ }
+
else if (! multibyte) /* just copy other chars */
*bufp++ = *strp++, nchars++;
else
@@ -977,6 +993,8 @@ void
syms_of_doc (void)
{
DEFSYM (Qfunction_documentation, "function-documentation");
+ DEFSYM (Qtraditional, "traditional");
+ DEFSYM (Qprefer_unicode, "prefer-unicode");
DEFVAR_LISP ("internal-doc-file-name", Vdoc_file_name,
doc: /* Name of file containing documentation strings of
built-in symbols. */);
@@ -986,6 +1004,18 @@ syms_of_doc (void)
doc: /* A list of files used to build this Emacs binary. */);
Vbuild_files = Qnil;
+ DEFVAR_LISP ("help-quote-translation", Vhelp_quote_translation,
+ doc: /* How to translate quotes for display in *Help*.
+If the value is nil (default), no translation is done.
+If it's the symbol `traditional', any occurrences of the curly quotes
+are translated to their ASCII "equivalents", GRAVE and APOSTROPHE.
+If it's the symbol `prefer-unicode', any matched pairs of GRAVE and
+APOSTROPHE will get translated into the "equivalent" curly quotes.
+
+Note that any translation done is done in a fresh copy of the doc
+string, and doesn't overwrite the original characters. */);
+ Vhelp_quote_translation = Qnil;
+
defsubr (&Sdocumentation);
defsubr (&Sdocumentation_property);
defsubr (&Ssnarf_documentation);
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