Don't match a variable name if it is followed by a dot.

This fixes conflicts between variable names and abbreviated function
names.

Author: dmsc

src/compiler/parser.h

@@ -238,6 +238,8 @@ class parse {
                         ret += c;
                         pos ++;
                     }
+                    else if( c == '.' )
+                        return false;
                     else
                         break;
                 }

src/vars.asm

@@ -183,6 +183,10 @@ next:
         jsr     check_char
         bcc     next
 
+        ; Check if there is a dot after the name, and reject
+        cmp     #'.'
+        beq     exit_2
+
         .byte   $2C     ; Skips two PLA
 exit_2:
         pla

testsuite/tests/abbrev.bas

@@ -5,8 +5,11 @@ DPOKE 1536, 1234
 ? SGN ABS DPEEK 1536
 ? D.(1536) + D. 1536
 ? E. , CHR$ 65 , STR$ 65
+E = 10
+? E.
+D = 3
+? D.(1536) + D. 1536
 A = 1
 ? ABSA
 ABSA = 10
 ? ABSA
-

testsuite/tests/abbrev.chk

@@ -7,4 +7,6 @@ Start
 2468
 1         A         65
 1
+2468
+1
 10