diff options
| -rw-r--r-- | src/inlines.c | 47 |
1 files changed, 38 insertions, 9 deletions
diff --git a/src/inlines.c b/src/inlines.c index f08e9eb..c4cd733 100644 --- a/src/inlines.c +++ b/src/inlines.c @@ -437,18 +437,47 @@ static cmark_node* handle_delim(subject* subj, unsigned char c, bool smart) // Assumes we have a hyphen at the current position. static cmark_node* handle_hyphen(subject* subj, bool smart) { + int startpos = subj->pos; + advance(subj); - if (smart && peek_char(subj) == '-') { - advance(subj); - if (peek_char(subj) == '-') { - advance(subj); - return make_str(cmark_chunk_literal(EMDASH)); - } else { - return make_str(cmark_chunk_literal(ENDASH)); - } - } else { + + if (!smart || peek_char(subj) != '-') { return make_str(cmark_chunk_literal("-")); } + + while (smart && peek_char(subj) == '-') { + advance(subj); + } + + int numhyphens = subj->pos - startpos; + int en_count = 0; + int em_count = 0; + int i; + cmark_strbuf buf = GH_BUF_INIT; + + assert(numyphens > 1); + + if (numhyphens % 3 == 0) { // if divisible by 3, use all em dashes + em_count = numhyphens / 3; + } else if (numhyphens % 2 == 0) { // if divisible by 2, use all en dashes + en_count = numhyphens / 2; + } else if (numhyphens % 3 == 2) { // use one en dash at end + en_count = 1; + em_count = (numhyphens - 2) / 3; + } else { // use two en dashes at the end + en_count = 2; + em_count = (numhyphens - 4) / 3; + } + + for (i = em_count; i > 0; i--) { + cmark_strbuf_puts(&buf, EMDASH); + } + + for (i = en_count; i > 0; i--) { + cmark_strbuf_puts(&buf, ENDASH); + } + + return make_str(cmark_chunk_buf_detach(&buf)); } // Assumes we have a period at the current position. |