diff options
| -rw-r--r-- | generic/tclBasic.c | 24 | ||||
| -rw-r--r-- | library/tm.tcl | 9 |
2 files changed, 31 insertions, 2 deletions
diff --git a/generic/tclBasic.c b/generic/tclBasic.c index a10a11a..a41351e 100644 --- a/generic/tclBasic.c +++ b/generic/tclBasic.c @@ -2175,7 +2175,8 @@ Tcl_CreateCommand( * * Side effects: * If a command named "cmdName" already exists for interp, it is - * first deleted. Then the new command is created from the arguments. + * first deleted. Then the new command is created from the arguments. + * [***] (See below for exception). * * In the future, during bytecode evaluation when "cmdName" is seen as * the name of a command by Tcl_EvalObj or Tcl_Eval, the object-based @@ -2242,8 +2243,27 @@ Tcl_CreateObjCommand( if (!isNew) { cmdPtr = Tcl_GetHashValue(hPtr); + /* Command already exists. */ + + /* + * [***] This is wrong. See Tcl Bug a16752c252. + * However, this buggy behavior is kept under particular + * circumstances to accommodate deployed binaries of the + * "tclcompiler" program. http://sourceforge.net/projects/tclpro/ + * that crash if the bug is fixed. + */ + + if (cmdPtr->objProc == TclInvokeStringCommand + && cmdPtr->clientData == clientData + && cmdPtr->deleteData == clientData + && cmdPtr->deleteProc == deleteProc) { + cmdPtr->objProc = proc; + cmdPtr->objClientData = clientData; + return (Tcl_Command) cmdPtr; + } + /* - * Command already exists; delete it. Be careful to preserve any + * Otherwise, we delete the old command. Be careful to preserve any * existing import links so we can restore them down below. That way, * you can redefine a command and its import status will remain * intact. diff --git a/library/tm.tcl b/library/tm.tcl index d2af4f5..55efda6 100644 --- a/library/tm.tcl +++ b/library/tm.tcl @@ -238,6 +238,15 @@ proc ::tcl::tm::UnknownHandler {original name args} { continue } + if {[package ifneeded $pkgname $pkgversion] ne {}} { + # There's already a provide script registered for + # this version of this package. Since all units of + # code claiming to be the same version of the same + # package ought to be identical, just stick with + # the one we already have. + continue + } + # We have found a candidate, generate a "provide script" # for it, and remember it. Note that we are using ::list # to do this; locally [list] means something else without |