https://bz.apache.org/bugzilla/show_bug.cgi?id=66405
Bug ID: 66405
Summary: IndexIgnore should not describe its argument as a
shell-style wildcard expression
Product: Apache httpd-2
Version: 2.4.54
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Documentation
Assignee: docs@httpd.apache.org
Reporter: met...@gmail.com
Target Milestone: ---
The documentation for the IndexIgnore directive of module mod_autoindex
describes each argument as "a shell-style wildcard expression or full
filename". Describing the argument that way wrongly tells the user that its
filename patterns work like shell filename patterns. They don't.
The documentation should describe the actual syntax and semantics of the
argument. And because its behavior is different from, but confusingly similar
to, shell-style filename patterns, it should also highlight the differences.
*~
This expression matches the filename '.example~' in httpd, but not in a shell.
A shell requires the '.' at the start of a filename to be matched explicitly,
and has for more than 40 years.
.[abcde]*
This expression matches the filename '.example~' in a shell, but not in httpd.
The directive does not support bracket expressions. Shell filename patterns
have supported them for more than 40 years.
The directive documentation is silent on what happens when the argument
contains a '/' (a full or partial pathname). There are people in the field
using expressions such as
*/.??*
I have no idea what httpd might do with such an argument. This should be
covered in the documentation.
Here is a draft rewrite that addresses part of this. Because I don't know the
semantics of '/' in the argument, I did not address that.
"The 'IndexIgnore' directive adds to the list of files to hide when listing a
directory. 'File' is a full filename, which can contain the '?' and '*'
wildcard characters. The '?' matches any single character. The '*' matches any
string of characters, even an empty string. When 'File' contains wildcard
characters, all matching filenames are hidden.
"Users familiar with standard Unix filename patterns should carefully note the
difference. The 'IndexIgnore' directive does not recognize bracketed character
classes. And the standard Unix filename pattern requires a '.' at the start of
a filename to be matched by an explicit '.' in the pattern, while the
'IndexIgnore' directive does not."
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