input: handle escapes always in command parser

Previously, both the command parser and property expansion
(m_properties_expand_string) handled escapes with '\'. Move all escape
handling into the command parser, and remove it from the property code.

This removes the need to escape strings twice for commands that use
property expansion.

The command parser is practically rewritten: it uses m_option for the
actual parsing, and reduces hackish C-string handling.

1 files changed, 1 insertions, 1 deletions

diff --git a/bstr.h b/bstr.h
index 5f04a75db8..f6ce407a80 100644
--- a/bstr.h
+++ b/bstr.h
@@ -152,7 +152,7 @@ static inline int bstr_find0(struct bstr haystack, const char *needle)
     return bstr_find(haystack, bstr0(needle));
 }
 
-static inline int bstr_eatstart0(struct bstr *s, char *prefix)
+static inline int bstr_eatstart0(struct bstr *s, const char *prefix)
 {
     return bstr_eatstart(s, bstr0(prefix));
 }