37700: Teach ${(z)} the 'repeat WORD SUBLIST' syntax.

ChangeLog

@@ -1,5 +1,9 @@
 2016-01-29  Daniel Shahaf  <d.s@daniel.shahaf.name>
 
+	* 37700: Src/lex.c, Src/parse.c, Src/zsh.h,
+	Test/D04parameter.ztst: Teach ${(z)} the 'repeat WORD SUBLIST'
+	syntax.
+
 	* unposted: Completion/Unix/Command/_init_d: _init_d: Report
 	failure to caller.
 

Src/lex.c

@@ -267,9 +267,13 @@ zshlex(void)
 {
     if (tok == LEXERR)
 	return;
-    do
+    do {
+	if (inrepeat_)
+	    ++inrepeat_;
+	if (inrepeat_ == 3 && isset(SHORTLOOPS))
+	    incmdpos = 1;
 	tok = gettok();
-    while (tok != ENDINPUT && exalias());
+    } while (tok != ENDINPUT && exalias());
     nocorrect &= 1;
     if (tok == NEWLIN || tok == ENDINPUT) {
 	while (hdocs) {
@@ -1899,6 +1903,7 @@ exalias(void)
 		  zshlextext[0] == '}' && !zshlextext[1])) &&
 		(rw = (Reswd) reswdtab->getnode(reswdtab, zshlextext))) {
 		tok = rw->token;
+		inrepeat_ = (tok == REPEAT);
 		if (tok == DINBRACK)
 		    incond = 1;
 	    } else if (incond && !strcmp(zshlextext, "]]")) {

Src/parse.c

@@ -63,6 +63,12 @@ int isnewlin;
 /**/
 int infor;
 
+/* != 0 if we are after a repeat keyword; if it's nonzero it's a 1-based index
+ * of the current token from the last-seen command position */
+
+/**/
+int inrepeat_; /* trailing underscore because of name clash with Zle/zle_vi.c */
+
 /* != 0 if parsing arguments of typeset etc. */
 
 /**/
@@ -271,6 +277,7 @@ parse_context_save(struct parse_stack *ps, int toplevel)
     ps->incasepat = incasepat;
     ps->isnewlin = isnewlin;
     ps->infor = infor;
+    ps->inrepeat_ = inrepeat_;
     ps->intypeset = intypeset;
 
     ps->hdocs = hdocs;
@@ -305,6 +312,7 @@ parse_context_restore(const struct parse_stack *ps, int toplevel)
     incasepat = ps->incasepat;
     isnewlin = ps->isnewlin;
     infor = ps->infor;
+    inrepeat_ = ps->inrepeat_;
     intypeset = ps->intypeset;
 
     hdocs = ps->hdocs;
@@ -447,6 +455,7 @@ init_parse_status(void)
      * using the lexical analyser for strings as well as here.
      */
     incasepat = incond = inredir = infor = intypeset = 0;
+    inrepeat_ = 0;
     incmdpos = 1;
 }
 
@@ -1482,6 +1491,7 @@ par_while(int *cmplx)
 static void
 par_repeat(int *cmplx)
 {
+    /* ### what to do about inrepeat_ here? */
     int oecused = ecused, p;
 
     p = ecadd(0);

Src/zsh.h

@@ -2921,6 +2921,7 @@ struct parse_stack {
     int incasepat;
     int isnewlin;
     int infor;
+    int inrepeat_;
     int intypeset;
 
     int eclen, ecused, ecnpats;

Test/D04parameter.ztst

@@ -479,6 +479,8 @@
     '(( 3 + 1 == 8 / 2 ))'
     'for (( i = 1 ; i < 10 ; i++ ))'
     '((0.25542 * 60) - 15)*60'
+    'repeat 3 (x)'
+    'repeat 3 (echo foo; echo bar)'
   )
   for string in $strings; do
     array=(${(z)string})
@@ -514,6 +516,20 @@
 >8:15:
 >9:):
 >10:*60:
+>1:repeat:
+>2:3:
+>3:(:
+>4:x:
+>5:):
+>1:repeat:
+>2:3:
+>3:(:
+>4:echo:
+>5:foo:
+>6:;:
+>7:echo:
+>8:bar:
+>9:):
 
 
   line=$'A line with # someone\'s comment\nanother line # (1 more\nanother one'