applied Ramils patch

[dmenu.git] / dmenu.c

diff --git a/dmenu.c b/dmenu.c
index bebc2065031cfac2e2778af52ba7fbb9734f3680..296695411ed4c7b47a1b3f665278614ccba58601 100644 (file)
--- a/dmenu.c
+++ b/dmenu.c
@@ -19,6 +19,7 @@
 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
 #define MIN(a, b)               ((a) < (b) ? (a) : (b))
 #define MAX(a, b)               ((a) > (b) ? (a) : (b))
+#define IS_UTF8_1ST_CHAR(c)     ((((c) & 0xc0) == 0xc0) || !((c) & 0x80))
 
 /* enums */
 enum { ColFG, ColBG, ColLast };
@@ -42,8 +43,8 @@ typedef struct {
 typedef struct Item Item;
 struct Item {
        char *text;
-       Item *next;             /* traverses all items */
-       Item *left, *right;     /* traverses items matching current search pattern */
+       Item *next;         /* traverses all items */
+       Item *left, *right; /* traverses items matching current search pattern */
 };
 
 /* forward declarations */
@@ -85,8 +86,8 @@ static unsigned int numlockmask = 0;
 static Bool running = True;
 static Display *dpy;
 static DC dc;
-static Item *allitems = NULL;  /* first of all items */
-static Item *item = NULL;      /* first of pattern matching items */
+static Item *allitems = NULL;  /* first of all items */
+static Item *item = NULL;      /* first of pattern matching items */
 static Item *sel = NULL;
 static Item *next = NULL;
 static Item *prev = NULL;
@@ -360,7 +361,7 @@ initfont(const char *fontstr) {
 void
 kpress(XKeyEvent * e) {
        char buf[sizeof text];
-       int i, num;
+       int i, num, off;
        unsigned int len;
        KeySym ksym;
 
@@ -475,13 +476,19 @@ kpress(XKeyEvent * e) {
                break;
        case XK_BackSpace:
                if(cursor > 0) {
-                       memmove(text + cursor - 1, text + cursor, sizeof text - cursor + 1);
-                       cursor--;
+                       off = 1;
+                       while(cursor > off && !IS_UTF8_1ST_CHAR(text[cursor - off]))
+                               off++;
+                       memmove(text + cursor - off, text + cursor, sizeof text - cursor + off);
+                       cursor -= off;
                        match(text);
                }
                break;
        case XK_Delete:
-               memmove(text + cursor, text + cursor + 1, sizeof text - cursor);
+               off = 1;
+               while(cursor + off < sizeof text - 1 && !IS_UTF8_1ST_CHAR(text[cursor + off]))
+                       off++;
+               memmove(text + cursor, text + cursor + off, sizeof text - cursor);
                match(text);
                break;
        case XK_End:
@@ -517,9 +524,11 @@ kpress(XKeyEvent * e) {
                                calcoffsets();
                        }
                }
-               else if(cursor > 0)
-                       cursor--;
-               else
+               else if(cursor > 0) {
+                       do {
+                               cursor--;
+                       } while(cursor > 0 && !IS_UTF8_1ST_CHAR(text[cursor]));
+               } else
                        return;
                break;
        case XK_Next:
@@ -544,9 +553,11 @@ kpress(XKeyEvent * e) {
                break;
        case XK_Right:
        case XK_Down:
-               if(cursor < len)
-                       cursor++;
-               else if(sel && sel->right) {
+               if(cursor < len) {
+                       do {
+                               cursor++;
+                       } while(cursor < len && !IS_UTF8_1ST_CHAR(text[cursor]));
+               } else if(sel && sel->right) {
                        sel=sel->right;
                        if(sel == next) {
                                curr = next;