Merge branch 'hg/id-munging'

* hg/id-munging:
  convert: Keep foreign $Id$ on checkout.
  convert: Safer handling of $Id$ contraction.

diff --git a/convert.c b/convert.c
index 4f8fcb7bbb00b66f1eaa354119784e6ef57e1eb4..5a0b7fbca4cc4999df6ddd05e5387afb3a0774b2 100644 (file)
--- a/convert.c
+++ b/convert.c
@@ -425,6 +425,8 @@ static int count_ident(const char *cp, unsigned long size)
                                cnt++;
                                break;
                        }
+                       if (ch == '\n')
+                               break;
                }
        }
        return cnt;
@@ -455,6 +457,11 @@ static int ident_to_git(const char *path, const char *src, size_t len,
                        dollar = memchr(src + 3, '$', len - 3);
                        if (!dollar)
                                break;
+                       if (memchr(src + 3, '\n', dollar - src - 3)) {
+                               /* Line break before the next dollar. */
+                               continue;
+                       }
+
                        memcpy(dst, "Id$", 3);
                        dst += 3;
                        len -= dollar + 1 - src;
@@ -470,7 +477,7 @@ static int ident_to_worktree(const char *path, const char *src, size_t len,
                              struct strbuf *buf, int ident)
 {
        unsigned char sha1[20];
-       char *to_free = NULL, *dollar;
+       char *to_free = NULL, *dollar, *spc;
        int cnt;
 
        if (!ident)
@@ -506,7 +513,10 @@ static int ident_to_worktree(const char *path, const char *src, size_t len,
                } else if (src[2] == ':') {
                        /*
                         * It's possible that an expanded Id has crept its way into the
-                        * repository, we cope with that by stripping the expansion out
+                        * repository, we cope with that by stripping the expansion out.
+                        * This is probably not a good idea, since it will cause changes
+                        * on checkout, which won't go away by stash, but let's keep it
+                        * for git-style ids.
                         */
                        dollar = memchr(src + 3, '$', len - 3);
                        if (!dollar) {
@@ -514,6 +524,20 @@ static int ident_to_worktree(const char *path, const char *src, size_t len,
                                break;
                        }
 
+                       if (memchr(src + 3, '\n', dollar - src - 3)) {
+                               /* Line break before the next dollar. */
+                               continue;
+                       }
+
+                       spc = memchr(src + 4, ' ', dollar - src - 4);
+                       if (spc && spc < dollar-1) {
+                               /* There are spaces in unexpected places.
+                                * This is probably an id from some other
+                                * versioning system. Keep it for now.
+                                */
+                               continue;
+                       }
+
                        len -= dollar + 1 - src;
                        src  = dollar + 1;
                } else {

diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index 6cb8d60ea2649495c0e3c8bbb8b7cc75c36799b7..828e35baf72d94908ad1f30dbd2e1aa6f9376e69 100755 (executable)
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -65,17 +65,21 @@ test_expect_success expanded_in_repo '
                echo "\$Id:NoSpaceAtFront \$"
                echo "\$Id:NoSpaceAtEitherEnd\$"
                echo "\$Id: NoTerminatingSymbol"
+               echo "\$Id: Foreign Commit With Spaces \$"
+               echo "\$Id: NoTerminatingSymbolAtEOF"
        } > expanded-keywords &&
 
        {
                echo "File with expanded keywords"
-               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
-               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
-               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
-               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
-               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
-               echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
+               echo "\$Id: fd0478f5f1486f3d5177d4c3f6eb2765e8fc56b9 \$"
+               echo "\$Id: fd0478f5f1486f3d5177d4c3f6eb2765e8fc56b9 \$"
+               echo "\$Id: fd0478f5f1486f3d5177d4c3f6eb2765e8fc56b9 \$"
+               echo "\$Id: fd0478f5f1486f3d5177d4c3f6eb2765e8fc56b9 \$"
+               echo "\$Id: fd0478f5f1486f3d5177d4c3f6eb2765e8fc56b9 \$"
+               echo "\$Id: fd0478f5f1486f3d5177d4c3f6eb2765e8fc56b9 \$"
                echo "\$Id: NoTerminatingSymbol"
+               echo "\$Id: Foreign Commit With Spaces \$"
+               echo "\$Id: NoTerminatingSymbolAtEOF"
        } > expected-output &&
 
        git add expanded-keywords &&