12. A computer program product for use at a computer system, the computer system including an editor for editing source code of a programming language, the computer program product for implementing a method for providing automated assistance to resolve the placement of a closing code construct operative as an editor caret when editing a portion of source code, the computer program product comprising one or more computer readable media having stored thereon computer-executable instructions that, when executed at a processor, cause the computer system to perform the method, including the following: while the editor is in a non-interaction mode for positioning closing code constructs: receive user input from a user, the user input for entering an opening code construct at a specified position within the portion of source code, wherein the opening code construct in combination with a corresponding closing code construct form a grouping representing a feature of the programming language that is being used to develop the source code; in response to receiving the user input for entering the opening code construct: visually indicate placement of the opening code construct at the specified position within the portion of source code; and visually indicate placement of the corresponding closing code construct at another position within the portion of source code based on one or more syntactical rules or semantic rules of the programming language; and detect that the user's intent with respect to placement of the corresponding closing construct is ambiguous, the ambiguous placement being a real-time event identified as a mismatch between the predicted placement for the closing construct and the user's actual placement of the closing construct in view of the user's earlier placement of the opening construct, the mismatch based on observance of the syntactical and semantic rules of the programming language; in response to the ambiguous placement, transition the editor to an interaction mode for positioning closing code constructs, the interaction mode visually indicating that the user is permitted to reposition the closing construct between one or more visually indicated valid positions within the portion of source code, the visual indication of one or more valid positions in accordance with the one or more syntactical rules or semantic rules of the programming language, the interaction mode altering how one or more forms of user input are interpreted by the editor; receive a form of user input, selected from among the one or more of forms of user input, from the user; re-position the closing code construct in accordance with an altered interpretation of the received form of user input due to the editor being in the interaction mode; and transition the editor out of the interaction mode subsequent to re-positioning the closing code construct.
12. A computer program product for use at a computer system, the computer system including an editor for editing source code of a programming language, the computer program product for implementing a method for providing automated assistance to resolve the placement of a closing code construct operative as an editor caret when editing a portion of source code, the computer program product comprising one or more computer readable media having stored thereon computer-executable instructions that, when executed at a processor, cause the computer system to perform the method, including the following: while the editor is in a non-interaction mode for positioning closing code constructs: receive user input from a user, the user input for entering an opening code construct at a specified position within the portion of source code, wherein the opening code construct in combination with a corresponding closing code construct form a grouping representing a feature of the programming language that is being used to develop the source code; in response to receiving the user input for entering the opening code construct: visually indicate placement of the opening code construct at the specified position within the portion of source code; and visually indicate placement of the corresponding closing code construct at another position within the portion of source code based on one or more syntactical rules or semantic rules of the programming language; and detect that the user's intent with respect to placement of the corresponding closing construct is ambiguous, the ambiguous placement being a real-time event identified as a mismatch between the predicted placement for the closing construct and the user's actual placement of the closing construct in view of the user's earlier placement of the opening construct, the mismatch based on observance of the syntactical and semantic rules of the programming language; in response to the ambiguous placement, transition the editor to an interaction mode for positioning closing code constructs, the interaction mode visually indicating that the user is permitted to reposition the closing construct between one or more visually indicated valid positions within the portion of source code, the visual indication of one or more valid positions in accordance with the one or more syntactical rules or semantic rules of the programming language, the interaction mode altering how one or more forms of user input are interpreted by the editor; receive a form of user input, selected from among the one or more of forms of user input, from the user; re-position the closing code construct in accordance with an altered interpretation of the received form of user input due to the editor being in the interaction mode; and transition the editor out of the interaction mode subsequent to re-positioning the closing code construct. 15. The computer-program product as recited in claim 12 , wherein computer-executable instructions that, when executed, cause the computer system to transition the editor to transition to an interaction mode for positioning closing code constructs comprise computer-executable instructions that, when executed, cause the computer system to transition to an interaction mode that permits repositioning of the closing construct based on semantic rules of the programming language.