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	Don't remove empty lines - ledit - Text editor (WIP)
	git clone git://lumidify.org/ledit.git (fast, but not encrypted)
	git clone https://lumidify.org/ledit.git (encrypted, but very slow)
	git clone git://4kcetb7mo7hj6grozzybxtotsub5bempzo4lirzc3437amof2c2impyd.onion/…
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	---
	commit 13045afb3112a363f771edc2d1f632889d8cdf9e
	parent 625a8fad5969b39a1ba8484a68935c27ba4a05a7
	Author: lumidify <[email protected]>
	Date: Mon, 9 Sep 2024 11:17:47 +0200

	Don't remove empty lines

	This bug was introduced in commit 79d3040398e884808312473b32e65a02a04feeef
	when handling of \r was introduced.

	Diffstat:
	M buffer.c \| 19 +++++++++++++++----

	1 file changed, 15 insertions(+), 4 deletions(-)
	---
	diff --git a/buffer.c b/buffer.c
	@@ -347,10 +347,17 @@ buffer_load_file(ledit_buffer buffer, char filename, si…
	if (ferror(file)) goto errorclose;
	file_contents[len + off] = '\0';
	/* don't generate extra newline at end */
	- for (int i = 0; i < 2; i++) {
	- if (len + off > 0 && (file_contents[len + off - 1] == '\n' \|\| …
	- file_contents[len + off - 1] = '\0';
	+ /* lastc is needed to avoid removing two newlines at the end if
	+ only \r or \n is used as the line separator */
	+ char lastc = '\0';
	+ for (int i = 0; i < 2 && len > 0; i++) {
	+ char *c = file_contents + len + off - 1;
	+ if (c != lastc && (c == '\n' \|\| *c == '\r')) {
	+ lastc = *c;
	+ *c = '\0';
	len--;
	+ } else {
	+ break;
	}
	}
	if (fclose(file)) goto error;
	@@ -616,8 +623,12 @@ buffer_insert_text_with_newlines_base(
	cur_index = 0;
	cur_line++;
	/* handle \n\r or \r\n */
	- if (cur_pos + 1 < len && (text[cur_pos + 1] == '\r' \|\|…
	+ /* the two chars are compared to make sure that \n\n o…
	+ still handled as separate newlines */
	+ if (cur_pos + 1 < len && text[cur_pos] != text[cur_pos…
	+ (text[cur_pos + 1] == '\r' \|\| text[cur_pos + 1] ==…
	cur_pos++;
	+ }
	last_pos = cur_pos + 1;
	}
	}