Revise r8309 to use \- rather than - when trying to emit a literal U+002D;

apparently this is preferred (it's what pod2man uses); cf Debian #496063,
#159872.

[originally from svn r8641]
[r8309 == 73e8c7d1b4ac77ec1b5acc700cb3af277a150bcf]

1 files changed, 17 insertions, 4 deletions

diff --git a/bk_man.c b/bk_man.c
index 92d7c3a..dce77d4 100644
--- a/bk_man.c
+++ b/bk_man.c
@@ -490,10 +490,23 @@ static int man_convert(wchar_t const *s, int maxlen,
 		/* Turn backslashes into \e. */
 		rdaddsc(&out, "\\e");
 		continue;
-	    } else if (*q == '-' && !(quote_props & QUOTE_LITERAL)) {
-		/* Turn nonbreakable hyphens into \(hy. */
-		rdaddsc(&out, "\\(hy");
-		continue;
+	    } else if (*q == '-') {
+		if (quote_props & QUOTE_LITERAL) {
+		    /*
+		     * Try to preserve literal U+002D.
+		     * This is quite awkward. Debian hacks groff so that
+		     * \- and - both produce it; elsewhere it's not necessarily
+		     * possible to get it.
+		     * Apparently \- is the preferred compromise despite
+		     * having minus-sign semantics, as it is non-breaking.
+		     * (pod2man uses it, anyway.)
+		     */
+		    rdaddc(&out, '\\');
+		} else {
+		    /* Turn nonbreakable hyphens into \(hy. */
+		    rdaddsc(&out, "\\(hy");
+		    continue;
+		}
 	    } else if (*q == '\'' && (quote_props & QUOTE_LITERAL)) {
 		/* Try to preserve literal U+0027 (using string defined
 		 * in preamble) */