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Overview
Comment:Improve ERRORLEVEL handling in the MSVC batch build tool sub-routine 'fn_UnsetVariable'.
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SHA1: fe123ab4f17f97ba9d64a7e0589ac47fd9d43877
User & Date: mistachkin 2016-02-05 04:55:01.668
Context
2016-02-05
14:11
Improvements to the way out-of-memory conditions are handled, resulting in an almost 1% performance gain in the commmon case where OOM errors do not occur. (check-in: b082538da7 user: drh tags: trunk)
04:55
Improve ERRORLEVEL handling in the MSVC batch build tool sub-routine 'fn_UnsetVariable'. (check-in: fe123ab4f1 user: mistachkin tags: trunk)
04:39
Another small tweak to the MSVC batch build tool. (check-in: 76718bbce7 user: mistachkin tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to tool/build-all-msvc.bat.
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:fn_UnsetVariable
  SETLOCAL
  SET VALUE=%1
  IF DEFINED VALUE (
    SET VALUE=
    ENDLOCAL
    SET %VALUE%=
    CALL :fn_ResetErrorLevel
  ) ELSE (
    ENDLOCAL
  )

  GOTO :EOF

:fn_AppendVariable
  SET __ECHO_CMD=ECHO %%%1%%
  IF DEFINED %1 (
    FOR /F "delims=" %%V IN ('%__ECHO_CMD%') DO (
      SET %1=%%V%~2








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731
732
733
734
735
736
737

738
739
740
741
742
743
744
745
746
747
748

:fn_UnsetVariable
  SETLOCAL
  SET VALUE=%1
  IF DEFINED VALUE (
    SET VALUE=
    ENDLOCAL
    SET %VALUE%=

  ) ELSE (
    ENDLOCAL
  )
  CALL :fn_ResetErrorLevel
  GOTO :EOF

:fn_AppendVariable
  SET __ECHO_CMD=ECHO %%%1%%
  IF DEFINED %1 (
    FOR /F "delims=" %%V IN ('%__ECHO_CMD%') DO (
      SET %1=%%V%~2
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