Imported from ../bash-4.0-rc1.tar.gz.

1 files changed, 42 insertions, 3 deletions

diff --git a/COMPAT b/COMPAT
index c591ede..b80beff 100644
--- a/COMPAT
+++ b/COMPAT
@@ -1,5 +1,5 @@
 This document details the incompatibilities between this version of bash,
-bash-3.2, and the previous widely-available versions, bash-1.14 (which is
+bash-4.0, and the previous widely-available versions, bash-1.14 (which is
 still the `standard' version for a few Linux distributions) and bash-2.x. 
 These were discovered by users of bash-2.x and 3.x, so this list is not
 comprehensive.  Some of these incompatibilities occur between the current
@@ -271,5 +271,44 @@ bash-2.0 were significant.)
     file permission bits obtained with stat(2).  This obeys restrictions of
     the file system (e.g., read-only or noexec mounts) not available via stat.
 
-33. Beginning with bash-3.1/readline-5.1, the readline key binding code obeys
-    the current setting of the `convert-meta' variable.
+33. Bash-3.2 adopts the convention used by other string and pattern matching
+    operators for the `[[' compound command, and matches any quoted portion
+    of the right-hand-side argument to the =~ operator as a string rather
+    than a regular expression.
+
+34. Bash-4.0 allows the behavior in the previous item to be modified using
+    the notion of a shell `compatibility level'.
+
+35. Bash-3.2 (patched) and Bash-4.0 fix a bug that leaves the shell in an
+    inconsistent internal state following an assignment error.  One of the
+    changes means that compound commands or { ... } grouping commands are
+    aborted under some circumstances in which they previously were not.
+    This is what Posix specifies.
+
+36. Bash-4.0 now allows process substitution constructs to pass unchanged
+    through brace expansion, so any expansion of the contents will have to be
+    separately specified, and each process subsitution will have to be
+    separately entered.
+
+37. Bash-4.0 now allows SIGCHLD to interrupt the wait builtin, as Posix
+    specifies, so the SIGCHLD trap is no longer always invoked once per
+    exiting child if you are using `wait' to wait for all children.
+
+38. Since bash-4.0 now follows Posix rules for finding the closing delimiter
+    of a $() command substitution, it will not behave as previous versions
+    did, but will catch more syntax and parsing errors before spawning a
+    subshell to evaluate the command substitution.
+
+39. The programmable completion code uses the same set of delimiting characters
+    as readline when breaking the command line into words, rather than the
+    set of shell metacharacters, so programmable completion and readline
+    should be more consistent.
+
+40. When the read builtin times out, it attempts to assign any input read to
+    specified variables, which also causes variables to be set to the empty
+    string if there is not enough input.  Previous versions discarded the
+    characters read.
+
+41. Beginning with bash-4.0, when one of the commands in a pipeline is killed
+    by a SIGINT while executing a command list, the shell acts as if it
+    received the interrupt.