Allow shortcuts for jumping the cursor over words

linenoise is extended to allow for jumping the cursor over words with
the Ctrl-Left Ctrl-Right keys. On macOS, the key binding would be
Controll-Command-Left and Controll-Command-Right.

linenoise.c

@@ -827,7 +827,7 @@ void linenoiseEditBackspace(struct linenoiseState *l)
     }
 }
 
-/* Delete the previosu word, maintaining the cursor at the start of the
+/* Delete the previous word, maintaining the cursor at the start of the
  * current word. */
 void linenoiseEditDeletePrevWord(struct linenoiseState *l)
 {
@@ -844,6 +844,37 @@ void linenoiseEditDeletePrevWord(struct linenoiseState *l)
     refreshLine(l);
 }
 
+/* Jump to the begining of the previous word */
+static void linenoiseEditPrevWord(struct linenoiseState *l)
+{
+    while (l->pos > 0 && l->buf[l->pos - 1] == ' ')
+        l->pos--;
+    while (l->pos > 0 && l->buf[l->pos - 1] != ' ')
+        l->pos--;
+    refreshLine(l);
+}
+
+/* Jump to the space after the current word */
+static void linenoiseEditNextWord(struct linenoiseState *l)
+{
+    while (l->pos < l->len) {
+        if (l->buf[l->pos] != ' ')
+            break;
+        l->pos++;
+    }
+
+    while (l->pos < l->len) {
+        if (l->buf[l->pos] == ' ')
+            break;
+        if (l->buf[l->pos] == '\0')
+            break;
+
+        l->pos++;
+    }
+
+    refreshLine(l);
+}
+
 /* This function is the core of the line editing capability of linenoise.
  * It expects 'fd' to be already in "raw mode" so that every key pressed
  * will be returned ASAP to read().
@@ -887,7 +918,7 @@ static int linenoiseEdit(int stdin_fd,
     while (1) {
         signed char c;
         int nread;
-        char seq[3];
+        char seq[5];
 
         nread = read(l.ifd, &c, 1);
         if (nread <= 0)
@@ -975,12 +1006,32 @@ static int linenoiseEdit(int stdin_fd,
                     /* Extended escape, read additional byte. */
                     if (read(l.ifd, seq + 2, 1) == -1)
                         break;
-                    if (seq[2] == '~') {
+                    switch (seq[2]) {
+                    case '~':
                         switch (seq[1]) {
                         case '3': /* Delete key. */
                             linenoiseEditDelete(&l);
                             break;
                         }
+                        break;
+
+                    case ';':
+                        /* Even more extended escape, read additional 2 bytes */
+                        if (read(l.ifd, seq + 3, 1) == -1)
+                            break;
+                        if (read(l.ifd, seq + 4, 1) == -1)
+                            break;
+                        if (seq[3] == '5') {
+                            switch (seq[4]) {
+                            case 'D': /* Ctrl Left */
+                                linenoiseEditPrevWord(&l);
+                                break;
+                            case 'C': /* Ctrl Right */
+                                linenoiseEditNextWord(&l);
+                                break;
+                            }
+                        }
+                        break;
                     }
                 } else {
                     switch (seq[1]) {

scripts/aspell-pws

@@ -150,3 +150,4 @@ offsetof
 rbtree
 vfprintf
 vla
+ctrl