i3 - improved tiling WM

restore i3bar compatibility with libyajl version 1

Patch status: merged

Patch by jj

Long description:

fixes #1004

To apply this patch, use:
curl http://cr.i3wm.org/patch/125/raw.patch | git am

b/i3bar/src/child.c

14 
@@ -359,7 +359,7 @@ void child_sig_cb(struct ev_loop *loop, ev_child *watcher, int revents) {
15 
 void child_write_output(void) {
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     if (child.click_events) {
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         const unsigned char *output;
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-        size_t size;
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+        unsigned int size;
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         yajl_gen_get_buf(gen, &output, &size);
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         write(child_stdin, output, size);
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         write(child_stdin, "\n", 1);
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@@ -388,11 +388,13 @@ void start_child(char *command) {
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     yajl_parser_config parse_conf = { 0, 0 };
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     parser = yajl_alloc(&callbacks, &parse_conf, NULL, (void*)&parser_context);
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+
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+    gen = yajl_gen_alloc(NULL, NULL);
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 #else
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     parser = yajl_alloc(&callbacks, NULL, &parser_context);
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-#endif
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     gen = yajl_gen_alloc(NULL);
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+#endif
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     if (command != NULL) {
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         int pipe_in[2]; /* pipe we read from */