scriptmgr.sh prep not atomic

[cyrmue]

Hi
the "scriptmgr.sh prep" command is included in .psqlrc and configured by default by the installation. Therefore on a server with multiple Cluster on one host, there could/will be much concurrency on using "psql".
In our env we have disabled the things in .psqlrc, because of this two points:

• as the execution and rewrite of the .run.* are not atomic, you could get an errors like "
  psql:/tools/postgres/local/pgbasenv/scripts/.run.13:3: error: invalid command \ psql:/tools/postgres/local/pgbasenv/scripts/.run.13:3: ERROR: syntax error at or near "." LINE 1: .sql' ^
  as the .run.* file is only half written
• rewriting this files every time psql is executed although nothing changed in almost 100% of the time is in my opinion a bit overkill. I see the problem that it is very comfortable.
  regards
  Cyrill