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add comment about meta characters.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36033 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr 2012-06-11 12:37:55 +00:00
parent f658207fe3
commit ffe89b7621
1 changed files with 24 additions and 0 deletions
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24
process.c
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@ -1847,6 +1847,30 @@ rb_exec_fillarg(VALUE prog, int argc, VALUE *argv, VALUE env, VALUE opthash, str
char *p; char *p;
int has_meta = 0; int has_meta = 0;
int has_nonspace = 0; int has_nonspace = 0;
/*
* meta characters:
*
* * Pathname Expansion
* ? Pathname Expansion
* {} Grouping Commands
* [] Pathname Expansion
* <> Redirection
* () Grouping Commands
* ~ Tilde Expansion
* & AND Lists, Asynchronous Lists
* | OR Lists, Pipelines
* \ Escape Character
* $ Parameter Expansion
* ; Sequential Lists
* ' Single-Quotes
* ` Command Substitution
* " Double-Quotes
* \n Lists
*
* # Comment
* = Assignment preceding command name
* % (used in Parameter Expansion)
*/
for (p = RSTRING_PTR(prog); *p; p++) { for (p = RSTRING_PTR(prog); *p; p++) {
if (!has_nonspace && *p != ' ' && *p != '\t') if (!has_nonspace && *p != ' ' && *p != '\t')
has_nonspace = 1; has_nonspace = 1;