Make help page more readable (#408)

* Make help page more readable

* Always use 2 columns only

diff --git a/src/nnn.c b/src/nnn.c
index d543a844f9189a5baacca7af93f5548550a01812..1c9005873177a01abfd989ede1d26f2703360c94 100644 (file)
--- a/src/nnn.c
+++ b/src/nnn.c
@@ -1775,19 +1775,6 @@ 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';
-
-       c = TOUPPER(c);
-       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);
@@ -3454,39 +3441,42 @@ static void show_help(const char *path)
        FILE *fp;
        const char *start, *end;
        const char helpstr[] = {
-               "0\n"
-               "1NAVIGATION\n"
-              "9Up k  Up          PgUp ^U  Scroll up\n"
-            "7Down j  Down        PgDn ^D  Scroll down\n"
-            "7Left h  Parent      ~ ` @ -  HOME, /, start, last\n"
-              "9g ^A  Top     Ret Right l  Open\n"
-              "9G ^E  Bottom            '  First file\n"
-                 "cb  Pin CWD          ^B  Go to pinned dir\n"
-              "9, ^/  Lead key    N LeadN  Context N\n"
-           "6(Sh)Tab  Cycle context     d  Detail view toggle\n"
-                 "c/  Filter       Ins ^N  Nav-as-you-type toggle\n"
-               "aEsc  Exit prompt   ^L F5  Redraw/clear prompt\n"
-                 "c.  Show/hide dots    ?  Help, conf\n"
-              "9Q ^Q  Quit  ^G  QuitCD  q  Quit context\n"
-               "1FILES\n"
-                "b^O  Open with...      n  Create new/link\n"
-                 "cD  File details  ^R F2  Rename/duplicate\n"
-        "3Space ^J/a  Sel toggle/all    r  Batch rename\n"
-              "9m ^K  Sel range, clear  M  List sel\n"
-                 "cP  Copy sel here     K  Edit sel\n"
-                 "cV  Move sel here     w  Copy/move sel as\n"
-                 "cX  Del sel          ^X  Del entry\n"
-                 "cf  Archive        o ^F  Archive ops\n"
-                 "ce  Edit in EDITOR    p  Open in PAGER\n"
-               "1ORDER TOGGLES\n"
-                 "cA  Apparent du       S  du\n"
-                 "cz  Size   E  Extn    t  Time\n"
-               "1MISC\n"
-              "9! ^]  Shell           ; x  Plugin key\n"
-                 "cC  Execute file   i ^V  Pick plugin\n"
-                 "cs  Manage session    =  Launch app\n"
-                 "cc  Connect remote    u  Unmount\n"
-              "9] ^P  Prompt            L  Lock\n"};
+               "\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"
+              };
 
        fd = create_tmp_file();
        if (fd == -1)
@@ -3501,8 +3491,8 @@ static void show_help(const char *path)
        start = end = helpstr;
        while (*end) {
                if (*end == '\n') {
-                       fprintf(fp, "%*c%.*s",
-                               xchartohex(*start), ' ', (int)(end - start), start + 1);
+                       xstrlcpy(g_buf, start, end - start + 2);
+                       fprintf(fp, g_buf, ' ', ' ');
                        start = end + 1;
                }