fix check for jump

+ C-u works with C-f and C-b (and their delete counterparts).
+ Opening files now allows adding a line number after to jump to.

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.15)
 project(ke C)  # Specify C language explicitly
 
 set(CMAKE_C_STANDARD 99)
-set(KE_VERSION "1.4.0")
+set(KE_VERSION "1.5.5")
 
 set(CMAKE_C_FLAGS "-Wall -Wextra -pedantic -Wshadow -Werror -std=c99 -g")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_DEFAULT_SOURCE -D_XOPEN_SOURCE")

README.txt

@@ -19,3 +19,6 @@ Released under an ISC license.
 
 Started by following along with kilo:
     https://viewsourcecode.org/snaptoken/kilo/
+
+E.g., in the devlogs
+    https://log.wntrmute.dev/2020/02/20200207

TODO

@@ -1,15 +1,18 @@
 [X] goto-line
 [X] text-corruption bug
 [ ] alt-modifiers
-[ ] refresh-screen
-[ ] functions -> keymapping?
+[x] refresh-screen
+[ ] functions -> keymapping? (what did this even mean)
 [X] rendering: need to skip over control characters like we do with tabs
 [X] control-d -> delete
-[ ] control-g -> exit buf prompt
-[ ] load-file prompt on dirty buffer
+[x] control-g -> exit buf prompt
+[x] load-file prompt on dirty buffer
 [ ] multiple files
+[x] utf-8
+[x] kill ring
+[x] mark/region
 
 What would it take for ke to be your daily drives?
-+ C-u
-+ Alt nav (backspace, delete, f, b, etc)
-
+[x] C-u (repeat actions)
+[x] Alt nav (backspace, delete, f, b, etc)
+[-] undo tree (C-k u/U)

default.nix

@@ -5,9 +5,15 @@
   installShellFiles,
   ...
 }:
+let
+  cmakeContent = builtins.readFile ./CMakeLists.txt;
+  cmakeLines = lib.splitString "\n" cmakeContent;
+  versionLine = lib.findFirst (l: builtins.match ".*set\\(KE_VERSION \".+\"\\).*" l != null) (throw "KE_VERSION not found in CMakeLists.txt") cmakeLines;
+  version = builtins.head (builtins.match ".*set\\(KE_VERSION \"(.+)\"\\).*" versionLine);
+in
 stdenv.mkDerivation {
   pname = "ke";
-  version = "1.4.0";
+  inherit version;
 
   src = lib.cleanSource ./.;
 

ke.1

@@ -26,10 +26,14 @@ k-command mode can be exited with ESC or C-g.
 .Bl -tag -width xxxxxxxxxxxx -offset indent
 .It C-k BACKSPACE
 Delete from the cursor to the beginning of the line.
-.It C-k c
-Clear (flush) the kill ring.
 .It C-k SPACE
 Toggle the mark.
+.It C-k -
+If the mark is set, unindent the region.
+.It C-k =
+If the mark is set, indent the region.
+.It C-k c
+Clear (flush) the kill ring.
 .It C-k d
 Delete from the cursor to the end of the line.
 .It C-k C-d
@@ -54,7 +58,11 @@ Immediately exit the editor.
 .It C-k C-r
 Reload the current buffer from disk.
 .It C-k s
-save the file, prompting for a filename if needed. Also C-k C-s.
+Save the file, prompting for a filename if needed. Also C-k C-s.
+.It C-k u
+Undo changes.
+.It C-k U
+Redo changes.
 .It C-k x
 save the file and exit. Also C-k C-x.
 .It C-k y
@@ -70,6 +78,9 @@ In general, C-g cancels an operation.
 Refresh the display.
 .It C-s
 Incremental find.
+.It C-u
+Universal argument. C-u followed by numbers will repeat an
+operation n times.
 .It C-w
 Kill the region if the mark is set.
 .It C-y

scratch.c

@@ -0,0 +1,162 @@
+/*
+ * scratch.c - ideas in progress
+ */
+
+#define REFLOW_MARGIN		72
+
+void
+reflow_region(void)
+{
+	int		 start_row, end_row, i, col, wlen, this_len;
+	struct erow	*row;
+	struct abuf	 buf = ABUF_INIT;
+	struct abuf	 out = ABUF_INIT;
+	int		 in_paragraph = 0;
+	int		 indent_len = 0;
+	char		 indent[REFLOW_MARGIN + 1];
+	char		 word[REFLOW_MARGIN + 1];
+	char		*e = NULL;
+	char		*p = NULL;
+	char		*s = NULL;
+
+	if (editor.mark_set) {
+		if (editor.mark_cury < editor.cury ||
+			(editor.mark_cury == editor.cury &&
+				editor.mark_curx < editor.curx)) {
+			start_row = editor.mark_cury;
+			end_row = editor.cury;
+		} else {
+			start_row = editor.cury;
+			end_row = editor.mark_cury;
+		}
+	} else {
+		start_row = end_row = editor.cury;
+		while (start_row > 0 && editor.row[start_row - 1].size > 0) {
+			start_row--;
+		}
+
+		while (end_row < editor.nrows - 1 &&
+			editor.row[end_row + 1].size > 0) {
+			end_row++;
+		}
+	}
+
+	if (start_row >= editor.nrows) {
+		return;
+	}
+
+	if (end_row >= editor.nrows) {
+		end_row = editor.nrows - 1;
+	}
+
+	for (i = start_row; i <= end_row; i++) {
+		row = &editor.row[i];
+
+		if (row->size == 0) {
+			if (in_paragraph) {
+				ab_append(&buf, "\n", 1);
+				in_paragraph = 0;
+			}
+
+			ab_append(&buf, "\n", 1);
+			continue;
+		}
+
+		if (!in_paragraph) {
+			indent_len = 0;
+			while (indent_len < row->size &&
+				(row->line[indent_len] == ' ' ||
+					row->line[indent_len] == '\t')) {
+				indent[indent_len] = row->line[indent_len], indent_len++;
+			}
+
+			indent[indent_len] = '\0';
+			in_paragraph = 1;
+		}
+
+		ab_append(&buf, row->line + indent_len, row->size - indent_len);
+		ab_append(&buf, " ", 1);
+	}
+
+	if (in_paragraph) {
+		ab_append(&buf, "\n", 1);
+	}
+
+
+	p = buf.b;
+	col = 0;
+
+	while (p != NULL && *p != '\0') {
+		while (*p && isspace((unsigned char)*p) &&
+			*p != '\n') {
+			p++;
+		}
+
+		if (*p == '\0') {
+			break;
+		}
+
+		wlen = 0;
+		while (*p && !isspace((unsigned char)*p)) {
+			if (wlen < REFLOW_MARGIN)
+				word[wlen++] = *p;
+			p++;
+		}
+		word[wlen] = '\0';
+
+		if (*p == '\n' && (p[1] == '\n' || p[1] == '\0')) {
+			ab_append(&out, "\n", 1); /* flush */
+			col = 0;
+			p++; /* consume the extra \n */
+			continue;
+		}
+
+		this_len = wlen;
+		if (col > 0) {
+			this_len++; /* space before word */
+		}
+
+		if (col == 0) {
+			ab_append(&out, indent, indent_len);
+			col = indent_len;
+		}
+
+		if (col + this_len > REFLOW_MARGIN && col > 0) {
+			ab_append(&out, "\n", 1);
+			ab_append(&out, indent, indent_len);
+			col = indent_len;
+		}
+
+		if (col > 0) {
+			ab_append(&out, " ", 1);
+			col++;
+		}
+
+		ab_append(&out, word, wlen);
+		col += wlen;
+	}
+
+	if (col > 0) {
+		ab_append(&out, "\n", 1);
+	}
+
+	/* the old switcharoo */
+	buf = out;
+	ab_free(&out);
+
+
+	for (i = end_row; i >= start_row; i--) {
+		delete_row(i);
+	}
+
+	s = buf.b;
+	while ((e = strchr(s, '\n'))) {
+		erow_insert(start_row++, s, e - s);
+		s = e + 1;
+	}
+
+	ab_free(&buf);
+
+	editor.dirty++;
+	editor_set_status("Region reflowed to %d columns", REFLOW_MARGIN);
+}