[elpa] elpa e4cde66 02/35: Determine AUCTEXDATE and AUCTEXVERSION from git

[Tassilo Horn]

branch: elpa
commit e4cde665461df3397113aea7e1976eeec01f5dfc
Author: Mosè Giordano <m...@gnu.org>
Commit: Mosè Giordano <m...@gnu.org>

    Determine AUCTEXDATE and AUCTEXVERSION from git
    
    * aclocal.m4 (AC_DATE_VERSION_FROM_CHANGELOG): if this is git
      repository, use it to determine the variables.
    * autogen.sh: Ditto.
---
 aclocal.m4 |   36 +++++++++++++++++++++++++++---------
 autogen.sh |   23 +++++++++++++++++++----
 2 files changed, 46 insertions(+), 13 deletions(-)

diff --git a/aclocal.m4 b/aclocal.m4
index 9b29ec0..b701653 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -93,21 +93,39 @@ fi
 ])
 
 AC_DEFUN(AC_DATE_VERSION_FROM_CHANGELOG, [
-AC_MSG_CHECKING([for date in ChangeLog])
-$1=[`sed -n '1s/^\([-0-9][-0-9]*\).*/\1/p' "$3"`]
+AC_MSG_CHECKING([for date with git])
+$1=[`git log -1 --date=short --format=%ad 2> /dev/null`]
 if test "X${$1}" = X
 then
-  AC_MSG_ERROR([[not found]])
+  AC_MSG_RESULT([git not found, checking for date in ChangeLog:])
+  $1=[`sed -n '1s/^\([-0-9][-0-9]*\).*/\1/p' "$3"`]
+  if test "X${$1}" = X
+  then
+    AC_MSG_ERROR([[not found]])
+  fi
 fi
 AC_MSG_RESULT(${$1})
-AC_MSG_CHECKING([for release in ChangeLog])
-$2=[`sed -n '2,/^[0-9]/s/.*Version \(.*\) released\..*/\1/p' "$3"`]
-if test "X${$2}" = X
+
+AC_MSG_CHECKING([for release with git])
+if git describe --tags > /dev/null 2> /dev/null
 then
-  $2=${$1}
-  AC_MSG_RESULT([not found, using ${$2} instead])
+  if test "X`git describe --tags | sed 's/release_.._..//'`" = X
+  then
+    $2=[`git describe --tags`]
+  else
+    $2=${$1}
+    AC_MSG_RESULT([not found, using ${$2} instead])
+  fi
 else
-  AC_MSG_RESULT([${$2}])
+  AC_MSG_RESULT([git not found, checking for release in ChangeLog:])
+  $2=[`sed -n '2,/^[0-9]/s/.*Version \(.*\) released\..*/\1/p' "$3"`]
+  if test "X${$2}" = X
+  then
+    $2=${$1}
+    AC_MSG_RESULT([not found, using ${$2} instead])
+  else
+    AC_MSG_RESULT([${$2}])
+  fi
 fi
 ])
 
diff --git a/autogen.sh b/autogen.sh
index 6b2bd73..1bed156 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -32,14 +32,29 @@ ${AUTOCONF} || { echo "Error running ${AUTOCONF} in ." >&2 
; exit 1; }
 rm -rf autom4te.cache
 if test "x${AUCTEXDATE}" = x
 then
-    AUCTEXDATE=`LC_ALL=C sed -n '1s/^\([-0-9][-0-9]*\).*/\1/p' ChangeLog.1`
-    test "X${AUCTEXDATE}" != X || { echo "Can't find date in ChangeLog.1" >&2 
; exit 1; }
+    AUCTEXDATE=`git log -1 --date=short --format=%ad 2> /dev/null`
+    if test "X${AUCTEXDATE}" = X
+    then
+       echo "Can't find date with git, trying with ChangeLog.1..." >&2
+       AUCTEXDATE=`LC_ALL=C sed -n '1s/^\([-0-9][-0-9]*\).*/\1/p' ChangeLog.1`
+       test "X${AUCTEXDATE}" != X || { echo "Can't find date in ChangeLog.1" 
>&2 ; exit 1; }
+    fi
 fi
 
 if test "x${AUCTEXVERSION}" = x
 then
-    AUCTEXVERSION=`sed -n '2,/^[0-9]/s/.*Version \(.*\) released\..*/\1/p' 
ChangeLog.1`
-    test "X${AUCTEXVERSION}" != X || AUCTEXVERSION=${AUCTEXDATE}
+    if git describe --tags >/dev/null 2> /dev/null
+    then
+       if test "X`git describe --tags | sed 's/release_.._..//'`" = X
+       then
+           AUCTEXVERSION=`git describe --tags`
+       else
+           AUCTEXVERSION=${AUCTEXDATE}
+       fi
+    else
+       AUCTEXVERSION=`sed -n '2,/^[0-9]/s/.*Version \(.*\) released\..*/\1/p' 
ChangeLog.1`
+       test "X${AUCTEXVERSION}" != X || AUCTEXVERSION=${AUCTEXDATE}
+    fi
 fi
 
 cd doc