Cut text between characters, never inside one

The index description was cut at a byte count, which could split a
multibyte character and leave an invalid sequence on the page. Commit
subjects already backed up to the start of the character, so html_ntxt
now does that for every caller.

1 file changed, 3 insertions, 2 deletions

diff --git a/source/html.h b/source/html.hindex 095804c..c6c0e19 100644--- a/source/html.h+++ b/source/html.h@@ -55,8 +55,9 @@ extern void html_attrf(const char *format, ...); extern void html_txt(const char *txt);  /*- * Escape at most len bytes of txt. The return is what is left of that budget,- * and a caller prints an ellipsis when it comes back negative.+ * Escape at most len bytes of txt, cutting short of a character the budget+ * would split. The return is what is left of that budget, and a caller prints+ * an ellipsis when it comes back negative.  */ extern ssize_t html_ntxt(const char *txt, size_t len); 
diff --git a/source/html.h b/source/html.h
index 095804c..c6c0e19 100644
--- a/source/html.h
+++ b/source/html.h
@@ -55,8 +55,9 @@ extern void html_attrf(const char *format, ...);
 extern void html_txt(const char *txt);
 
 /*
- * Escape at most len bytes of txt. The return is what is left of that budget,
- * and a caller prints an ellipsis when it comes back negative.
+ * Escape at most len bytes of txt, cutting short of a character the budget
+ * would split. The return is what is left of that budget, and a caller prints
+ * an ellipsis when it comes back negative.
  */
 extern ssize_t html_ntxt(const char *txt, size_t len);