Bug #222091 - Filter out any instances of the \1 character from variable

values since this character multiplies each time that the environment
is saved (strange bash behavior). This can eventually result in
mysterious 'Argument list too long' errors from programs that have
huge strings of \1 characters in their environment.

svn path=/main/trunk/; revision=11485

diff --git a/bin/filter-bash-environment.py b/bin/filter-bash-environment.py
index d3434ff0e18d25827324e5d91c0b17c34ccf35b3..42ebd744745d22d52fe24cc8d02bec7dd36d532d 100755 (executable)
--- a/bin/filter-bash-environment.py
+++ b/bin/filter-bash-environment.py
@@ -25,6 +25,11 @@ def have_end_quote(quote, line):
                close_quote_match.group(1) == quote
 
 def filter_bash_environment(pattern, file_in, file_out):
+       # Filter out any instances of the \1 character from variable values
+       # since this character multiplies each time that the environment
+       # is saved (strange bash behavior). This can eventually result in
+       # mysterious 'Argument list too long' errors from programs that have
+       # huge strings of \1 characters in their environment. See bug #222091.
        here_doc_delim = None
        in_func = None
        multi_line_quote = None
@@ -32,7 +37,7 @@ def filter_bash_environment(pattern, file_in, file_out):
        for line in file_in:
                if multi_line_quote is not None:
                        if not multi_line_quote_filter:
-                               file_out.write(line)
+                               file_out.write(line.replace("\1", ""))
                        if have_end_quote(multi_line_quote, line):
                                multi_line_quote = None
                                multi_line_quote_filter = None
@@ -59,7 +64,7 @@ def filter_bash_environment(pattern, file_in, file_out):
                                                                (declare_opts, line[readonly_match.end():])
                                                else:
                                                        line = "declare " + line[readonly_match.end():]
-                                       file_out.write(line)
+                                       file_out.write(line.replace("\1", ""))
                                continue
                if here_doc_delim is not None:
                        if here_doc_delim.match(line):