real_path_internal(): add comment explaining use of cwd

diff --git a/grep.c b/grep.c
index be15c4753d9768820dc47e107b54f41523c13caf..898be6ebfaf2a4247ee3a64993253237b4dcc706 100644 (file)
--- a/grep.c
+++ b/grep.c
@@ -3,6 +3,10 @@
 #include "userdiff.h"
 #include "xdiff-interface.h"
 
+static int grep_source_load(struct grep_source *gs);
+static int grep_source_is_binary(struct grep_source *gs);
+
+
 static struct grep_pat *create_grep_pat(const char *pat, size_t patlen,
                                        const char *origin, int no,
                                        enum grep_pat_token t,
@@ -403,7 +407,7 @@ static void dump_grep_expression_1(struct grep_expr *x, int in)
        }
 }
 
-void dump_grep_expression(struct grep_opt *opt)
+static void dump_grep_expression(struct grep_opt *opt)
 {
        struct grep_expr *x = opt->pattern_expression;
 
@@ -476,6 +480,22 @@ static struct grep_expr *prep_header_patterns(struct grep_opt *opt)
        return header_expr;
 }
 
+static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y)
+{
+       struct grep_expr *z = x;
+
+       while (x) {
+               assert(x->node == GREP_NODE_OR);
+               if (x->u.binary.right &&
+                   x->u.binary.right->node == GREP_NODE_TRUE) {
+                       x->u.binary.right = y;
+                       break;
+               }
+               x = x->u.binary.right;
+       }
+       return z;
+}
+
 static void compile_grep_patterns_real(struct grep_opt *opt)
 {
        struct grep_pat *p;
@@ -510,6 +530,9 @@ static void compile_grep_patterns_real(struct grep_opt *opt)
 
        if (!opt->pattern_expression)
                opt->pattern_expression = header_expr;
+       else if (opt->all_match)
+               opt->pattern_expression = grep_splice_or(header_expr,
+                                                        opt->pattern_expression);
        else
                opt->pattern_expression = grep_or_expr(opt->pattern_expression,
                                                       header_expr);
@@ -1446,7 +1469,7 @@ static int grep_source_load_file(struct grep_source *gs)
        return 0;
 }
 
-int grep_source_load(struct grep_source *gs)
+static int grep_source_load(struct grep_source *gs)
 {
        if (gs->buf)
                return 0;
@@ -1474,7 +1497,7 @@ void grep_source_load_driver(struct grep_source *gs)
        grep_attr_unlock();
 }
 
-int grep_source_is_binary(struct grep_source *gs)
+static int grep_source_is_binary(struct grep_source *gs)
 {
        grep_source_load_driver(gs);
        if (gs->driver->binary != -1)