Fix LSINF1252 broken-like link

Author: jy95

results/results1.json

@@ -2575,7 +2575,7 @@
         },
         {
             "title": "Printing data",
-            "description": "In this exercise, you will familiarize yourself with the functions\r\n[printf(3)](https://sites.uclouvain.be/SystInfo/manpages/man3/printf.3.html)\r\n(printing on the standard output) and\r\n[sprintf(3)](https://inginious.info.ucl.ac.be/course/LSINF1252/%60printf%20%3Chttps://sites.uclouvain.be/SystInfo/manpages/man3/sprintf.3.html)\r\n(text formatting).\r\n",
+            "description": "In this exercise, you will familiarize yourself with the functions\r\n[printf(3)](https://sites.uclouvain.be/SystInfo/manpages/man3/printf.3.html)\r\n(printing on the standard output) and\r\n[sprintf(3)](https://sites.uclouvain.be/SystInfo/manpages/man3/sprintf.3.html)\r\n(text formatting).\r\n",
             "tags": [
                 {
                     "text": "INGINIOUS",
@@ -4656,6 +4656,6 @@
         "1": "Misconception",
         "2": "autres"
     },
-    "extraction_date": "2019-12-17T22:37:37.244Z",
+    "extraction_date": "2019-12-17T23:03:38.265Z",
     "url": "https://github.com/UCL-INGI/LSINF1252"
 }

strategies/inginious-git.js

@@ -546,6 +546,13 @@ function clean_inginious_links(description, inginious_link) {
 
     // To  solve nasty links found
     const url_solver = (givenUrl) => {
+
+        // conner case for links of LSINF1252 - some links are literally broken like
+        // like "%60printf%20%3Chttps://sites.uclouvain.be/SystInfo/manpages/man3/sprintf.3.html"
+        if (givenUrl.startsWith("%")) {
+            givenUrl = givenUrl.replace(/\%.*http/, "http");
+        }
+
         // if already an absolute link, no work to do or
         // if no inginiousURL in settings, cannot infer the real link
         if (isAbsoluteUrl(givenUrl) || inginious_link.length === 0) {