Use a combo to parse help string

src/nnn.c

@@ -1775,6 +1775,21 @@ static int xstrverscasecmp(const char * const s1, const char * const s2)
 
 static int (*cmpfn)(const char * const s1, const char * const s2) = &xstricmp;
 
+/* Return the integer value of a char representing HEX */
+static char xchartohex(char c)
+{
+	if (xisdigit(c))
+		return c - '0';
+
+	if (c >= 'a' && c <= 'f')
+		return c - 'a' + 10;
+
+	if (c >= 'A' && c <= 'F')
+		return c - 'A' + 10;
+
+	return c;
+}
+
 static int setfilter(regex_t *regex, const char *filter)
 {
 	return regcomp(regex, filter, REG_NOSUB | REG_EXTENDED | REG_ICASE);
@@ -3441,41 +3456,41 @@ static void show_help(const char *path)
 	FILE *fp;
 	const char *start, *end;
 	const char helpstr[] = {
-		"\n"
-		" NAVIGATION\n"
-	       "%-9cUp k  Up%-20cPgUp ^U  Scroll up\n"
-	     "%-7cDown j  Down%-18cPgDn ^D  Scroll down\n"
-	     "%-7cLeft h  Parent%-16c~ ` @ -  HOME, /, start, last\n"
-	       "%-9cg ^A  Top%-15cRet Right l  Open\n"
-	       "%-9cG ^E  Bottom%-22c'  First file\n"
-		  "%-12cb  Pin CWD%-20c^B  Go to pinned dir\n"
-	       "%-9c, ^/  Lead key%-14cN LeadN  Context N\n"
-	    "%-6c(Sh)Tab  Cycle context%-15cd  Detail view toggle\n"
-		  "%-12c/  Filter%-17cIns ^N  Nav-as-you-type toggle\n"
-		"%-10cEsc  Exit prompt%-13c^L F5  Redraw/clear prompt\n"
-	          "%-12c.  Show/hide dots%-14c?  Help, conf\n"
-	       "%-9cQ ^Q  Quit%-24cq  Quit context\n"
-	       "%-11c^G  QuitCD%-1c\n"
-		" FILES\n"
-		 "%-11c^O  Open with...%-16cn  Create new/link\n"
-		  "%-12cD  File details%-12c^R F2  Rename/duplicate\n"
-	 "%-3cSpace ^J/a  Sel toggle/all%-14cr  Batch rename\n"
-	       "%-9cm ^K  Sel range, clear%-12cM  List sel\n"
-		  "%-12cP  Copy sel here%-15cK  Edit sel\n"
-		  "%-12cV  Move sel here%-15cw  Copy/move sel as\n"
-		  "%-12cX  Delete sel%-17c^X  Delete entry\n"
-		  "%-12cf  Archive%-18co ^F  Archive ops\n"
-		  "%-12ce  Edit in EDITOR%-14cp  Open in PAGER\n"
-		" ORDER TOGGLES\n"
-		  "%-12cA  Apparent du%-17cS  du\n"
-		  "%-12cz  Size%-24ct  Time\n"
-		  "%-12cE  Extension%-1c\n"
-		" MISC\n"
-	       "%-9c! ^]  Shell%-21c; x  Plugin key\n"
-		  "%-12cC  Execute file%-13ci ^V  Pick plugin\n"
-		  "%-12cs  Manage session%-14c=  Launch app\n"
-		  "%-12cc  Connect remote%-14cu  Unmount\n"
-	       "%-9c] ^P  Prompt%-22cL  Lock\n"
+		"0\n"
+		"1NAVIGATION\n"
+	       "9Up k  Up%-20cPgUp ^U  Scroll up\n"
+	     "7Down j  Down%-18cPgDn ^D  Scroll down\n"
+	     "7Left h  Parent%-16c~ ` @ -  HOME, /, start, last\n"
+	       "9g ^A  Top%-15cRet Right l  Open\n"
+	       "9G ^E  Bottom%-22c'  First file\n"
+		  "cb  Pin CWD%-20c^B  Go to pinned dir\n"
+	      "9c, ^/  Lead key%-14cN LeadN  Context N\n"
+	    "6(Sh)Tab  Cycle context%-15cd  Detail view toggle\n"
+		  "c/  Filter%-17cIns ^N  Nav-as-you-type toggle\n"
+		"aEsc  Exit prompt%-13c^L F5  Redraw/clear prompt\n"
+		  "c.  Show/hide dots%-14c?  Help, conf\n"
+	       "9Q ^Q  Quit%-24cq  Quit context\n"
+		 "b^G  QuitCD%-1c\n"
+		"1FILES\n"
+		 "b^O  Open with...%-16cn  Create new/link\n"
+		  "cD  File details%-12c^R F2  Rename/duplicate\n"
+	 "3Space ^J/a  Sel toggle/all%-14cr  Batch rename\n"
+	       "9m ^K  Sel range, clear%-12cM  List sel\n"
+		  "cP  Copy sel here%-15cK  Edit sel\n"
+		  "cV  Move sel here%-15cw  Copy/move sel as\n"
+		  "cX  Delete sel%-17c^X  Delete entry\n"
+		  "cf  Archive%-18co ^F  Archive ops\n"
+		  "ce  Edit in EDITOR%-14cp  Open in PAGER\n"
+		"1ORDER TOGGLES\n"
+		  "cA  Apparent du%-17cS  du\n"
+		  "cz  Size%-24ct  Time\n"
+		  "cE  Extension%-1c\n"
+		"1MISC\n"
+	       "9! ^]  Shell%-21c; x  Plugin key\n"
+		  "cC  Execute file%-13ci ^V  Pick plugin\n"
+		  "cs  Manage session%-14c=  Launch app\n"
+		  "cc  Connect remote%-14cu  Unmount\n"
+	       "9] ^P  Prompt%-22cL  Lock\n"
 	       };
 
 	fd = create_tmp_file();
@@ -3491,7 +3506,8 @@ static void show_help(const char *path)
 	start = end = helpstr;
 	while (*end) {
 		if (*end == '\n') {
-			xstrlcpy(g_buf, start, end - start + 2);
+			snprintf(g_buf, CMD_LEN_MAX, "%*c%.*s",
+				 xchartohex(*start), ' ', (int)(end - start), start + 1);
 			fprintf(fp, g_buf, ' ', ' ');
 			start = end + 1;
 		}