branch: elpa/emacsql
commit 223db2d39789c67c15a3002516b76c9670114cb6
Author: Christopher Wellons <[email protected]>
Commit: Christopher Wellons <[email protected]>
Add quote operator.
---
README.md | 11 +++++++++++
emacsql.el | 4 ++++
2 files changed, 15 insertions(+)
diff --git a/README.md b/README.md
index 8c554d7a9b..f680060849 100644
--- a/README.md
+++ b/README.md
@@ -117,6 +117,17 @@ With `glob` and `like` keep in mind that they're matching
the
*printed* representations of these values, even if the value is a
string.
+Inside expressions, Emacsql cannot tell the difference between symbol
+literals and column references. If you're talking about the symbol
+itself, just quote it as you would in normal Elisp. Note that this
+does not "escape" `$n` variables: it just means the argument gets
+quoted.
+
+```el
+[... :where (= category 'hiking)]
+(emacsql db [... :where (= category '$1)] 'hiking)
+```
+
The `||` concatenation operator is unsupported because concatenating
printed representations breaks an important constraint: all values must
remain readable within SQLite.
diff --git a/emacsql.el b/emacsql.el
index 158a23e439..9292a0b730 100644
--- a/emacsql.el
+++ b/emacsql.el
@@ -531,6 +531,10 @@ definitions for return from a `emacsql-defexpander'."
(cl-ecase (length args)
(1 (format "-(%s)" (recur 0)))
(2 (format "%s - %s" (recur 0) (recur 1)))))
+ ;; quote special case
+ ((quote)
+ (cl-ecase (length args)
+ (1 (var (nth 0 args) :value))))
;; IN special case
((in)
(cl-case (length args)
